Human Geography: Population and Racial Dynamics of Earth

Definition and Scope of Human Geography

The division of Geography known as Human Geography is the study of man's relation with the natural environment and the resulting human environment created by man in a spatio-temporal perspective.
Characteristics of the man-made environment vary across the earth due to differences in natural environment, population size, and human qualities.
A significant number of branches and sub-branches exist under the umbrella of human geography because of the diversity of subject matter and scope. These include: - Settlement geography - Social geography - Economic geography - Cultural geography - Political geography - Urban geography - Population geography - Medical geography - Historical geography - Geography of regional development and planning
The study of these branches is human-centric, focusing on the growth and distribution of humans, including their activities, composition, physical structure, and diverse characteristics.
The earth's population of above $700$ crore people is highly diverse in terms of physical structure, religious-linguistic composition, behavior, customs, economic activities, and educational qualities.

Concept and Definition of Human Race

Every human being is physically unique in appearance, but all share a basic biological composition and morphological characteristics because the cells constituting the human body are the same.
Biologically, all human beings belong to the species $Homo\,sapiens$ .
The concept of "Human Race" is biological rather than cultural. Anthropologists state that varying morphological characteristics emerged due to different climates and geographical conditions from the beginning of human origin.
A Human Race is defined as a group of people having almost similar physical traits and skin color, carrying breeds of similar characteristics from generation to generation through the reproduction process.
Basic inter-group differences used for classification include: - Skin color - Hair color and structure - Height - Structure of the nose and face
On the basis of these differences, humans are broadly divided into three groups: 1. Caucasoid 2. Negroid 3. Mongoloid

Origin of Human Beings and Human Race

The origin of humans remains somewhat mysterious, but according to the Evolution Theory, animal humans called $Homo\,sapiens$ were born during the middle of the Pleistocene period, approximately $5-6$ lakh years ago ( $500,000-600,000$ years ago).
Evolution occurred in certain mammals such as monkeys, chimpanzees, and gorillas when the natural environment and climate were congenial.
Anthropologists identify the central part of Africa as the initial birthplace of human beings, from where they spread to other parts of the world.
Physical characteristics changed over time due to natural environment changes and biological evolution: - Negroid (dark skin color): Groups settled in hot regions of Africa. - Caucasoid (white skin color): Groups settled in colder regions of Europe. - Mongoloid (yellow skin color): Groups settled in somewhat colder regions of central Asia.
At present, it is difficult to find a human race in pure form due to the intermingling of population through worldwide migration.

Characteristics of Major Human Races

Caucasoid Race: - Represents more than half of the world's population (the world’s largest human race). - Included groups: Nordic, Alpine, and Mediterranean people of Europe; Indo-Aryan people of southern Asia; and Semitic-Hemitic people of western Asia. - Physical traits: Very white skin among Europeans; olive brown skin among Indian and South-West Asian people. Hair is generally straight or curly, colored black or brown. The nose is sharp and narrow.
Negroid Race: - Found in Africa, southern India, Sri Lanka, parts of south-east Asia, and Oceania. - Sub-races: Nelotic-Hemitic (eastern Africa), Bantu (central and southern Africa), Bushman and Pigmy (western Africa), Negrito (southern India and south-east Asia), Melanesian (south-western Pacific ocean), and Australoid (Oceania). - Physical traits: Dark or dark-brown skin, curly hair, wide and blunt nose, and often a tall stature.
Mongoloid Race: - Found in central, east, and south-east Asia. - Included groups: Chinese, Japanese, Korean, Burmese, Thai, Vietnamese, Khmer, and Malay. - Tribal groups in Assam belonging to this stock: Bodo, Karbi, Mising, Garo, and Rabha. - Physical traits: Yellowish body skin, smaller eyes, and straight hair.

Spread and Distribution of Human Races

Modern archaeology suggests humans appeared at least $1$ lakh years ago ( $100,000$ years ago) in the eastern part of tropical Africa.
The early human body structure is believed to have been a mixture of the three major races.
Asia is considered a secondary location of human origin.
Spread of human population occurred $25-30$ thousand years ago from tropical eastern Africa.
Physical changes were driven by climate, environment, and the process of natural selection/heredity.
Specific Migration Paths: - During the Pleistocene ice-age, snow-covered oceans formed land linkages. The Bering Strait between Siberia and Alaska facilitated the movement of Mongoloids from central Asia into North, Central, and South America. - Caucasoids migrated from south-west Asia to north and western Europe and north and east Africa. - Negroids migrated from central Africa to south and east Africa and parts of south Asia. - The Indo-Aryan people in the Indian sub-continent belong to the Mediterranean class of the Caucasoid group who migrated from southern Europe. - White people in South Africa, Australia, and New Zealand belong to the Nordic class of the Caucasoid group who migrated from western Europe.

Religious Composition of the World

Religion is defined as the set of rules and morals that guide people of different places or groups for living.
Major Religions (Pop. Estimate 2006): - Christian Religion: Largest group, $2,130$ million ( $33.0\%$ of population). - Islam Religion: Second largest, $1,350$ million ( $21.0\%$ of population). - Hindu Religion: Oldest religion, $900$ million ( $14.0\%$ of population). - Buddhist Religion: $380$ million ( $6.0\%$ of population). - Chinese Folk Religion: $390$ million ( $6.1\%$ of population). - Other Groups: Judai ( $16$ million, $0.2\%$ ), Sikh ( $23$ million, $0.3\%$ ), Bahai ( $7$ million, $0.1\%$ ), Other Religions ( $1,246$ million, $19.3\%$ ).
Tribal populations may pray to natural elements (trees, mountains, sun, rivers) instead of following a specific major religion.

Detailed Overviews of Major Religions

Hindu Religion: - World's oldest religion, evolved at least $5000$ years ago during the Vedic period. - Named after its birthplace, the land east of the Indus river. - Based on a belief system of many Gods and Goddesses. - Includes Aryans and Dravidians. - Holy book: Ved (Vedas).
Christian Religion: - Founded $2000$ years ago, centering on Greek and Roman civilizations. - Monotheistic (believer in one God). - Two major divisions: Roman Catholic and Protestant. - Holy book: Bible.
Islam Religion: - Founded almost $1400$ years ago in the desert region of the Middle-east by Prophet Mohammed. - Monotheistic. - Two major divisions: Shia and Sunni. - Holy book: Quran.
Buddhist Religion: - Founded around $2500$ years ago in Bodh Gaya, northern India, by Gautam Buddha as a reform in Hinduism. - Two major divisions: Hinayana and Mahayana. - Holy book: Tripitaka.

Global Distribution of Religious Groups

Christianity: Highest spatial spread due to conversion/missionary activities. Dominates North and South America, Europe, and Australia (>90\% of people). Protestant strongholds include Great Britain, Northern Ireland, Northern Netherlands, Scandinavia, Finland, Denmark, Northern/Central Germany, Estonia, Canada, South Africa, and New Zealand.
Islam: Concentrated in Northern Africa, Middle-East (Saudi Arabia, Iran, Iraq, etc.), South Asia (Pakistan, Bangladesh), and South-East Asia (Brunei, Indonesia, Malaysia). Also found in European regions like Albania, Bosnia, and Central Asian states like Uzbekistan and Turkmenistan.
Hinduism: Mostly concentrated in India and Nepal ( $80\%$ of the world’s Hindus live in India). Also present in Mauritius, Fiji, Guyana, Surinam, Trinidad, Sri Lanka, and Malaysia.
Buddhism: - Hinayana sect: Sri Lanka, Myanmar, Thailand, Laos, Cambodia. - Mahayana sect: Tibet, Mongolia, Taiwan, Sikiang (China), Japan, Koreas, Bhutan, Vietnam.

Population Composition in India and Assam

India (2001 Census): - Hindu: $81.4\%$ (dominant in most states). - Islam: $12.4\%$ (dominant in Jammu and Kashmir). - Christian: $2.3\%$ (dominant in Nagaland, Mizoram, and Meghalaya). - Sikh: $1.9\%$ (dominant in Punjab; also in Haryana). - Buddhist: $0.8\%$ (found in Sikkim, Arunachal Pradesh, West Bengal, Bihar, Maharashtra, J&K). - Jain: Mostly in Rajasthan.
Assam: - Hindu: $64.9\%$ - Islam: $30.9\%$ - Christian: $3.7\%$ - Buddhist: $0.2\%$ - Sikh: $0.1\%$ - Jain: $0.1\%$

Questions & Discussion

When was human being born on the earth? - Correct answer: $5-6$ lakh years ago.
Which is the largest religious group in terms of population? - Correct answer: Christian.
In which continent did man appear/originate first? - Correct answer: Africa.
With which racial group did the people of China belong? - Correct answer: Mongoloid group.
Definition Review: Human Geography involves studying the spatio-temporal perspective of human-environment relations. Human race refers to biological groupings based on heritable physical traits. The three major races are Caucasoid, Negroid, and Mongoloid, categorized by skin color, hair, facial structure, and height.
Migration Context: Early humans originated in Tropical Africa approximately $100,000$ years ago, later migrating across land bridges and islands following climate stabilization post-ice age.