Geographic Scope
Spanned Afro-Eurasia: Mediterranean, Middle East, Persia, India, Southeast Asia, China, East & West Africa.
Key urban hubs: Constantinople, Alexandria, Baghdad, Mecca, Delhi, Guangzhou, Beijing, Kilwa, Mogadishu, Malacca.
Categories of Routes
Major Silk Road routes: Overland arteries linking Roman/Byzantine regions to Persia, India, and China.
Minor Silk Road routes: Auxiliary land links feeding the core network.
Other minor land routes: Sub-Saharan corridors tying West/East Africa to Eurasia.
Sea routes: Indian Ocean system tying Red Sea, Arabian Sea, Bay of Bengal, South China Sea.
Technological & Environmental Enablers
Improved shipbuilding (e.g., lateen sails) and hull designs.
Advanced navigation techniques & cartography.
Predictable monsoon wind system:
Spring/Summer: south-westerlies → ships sail toward India & SE Asia.
Winter: north-easterlies → ships return toward Arabia & East Africa.
Result: Safer, faster, scheduled maritime commerce.
Pack animal technologies on land: yokes, saddles for camels, horses, oxen → heavier, long-distance caravans.
Economic & Cultural Impacts
First true trans-oceanic connection of the regions; enabled large-scale exchange of goods (silk, spices, gold, salt, slaves), ideas, & religions.
Fostered cosmopolitan entrepôts (e.g., Hormuz, Calicut, Quanzhou, Malacca) with diasporic merchant communities.
Stimulated state revenues (port duties, caravanserai taxes) and urban growth.
Ethical implication: Expansion of slave trades (East African, Trans-Saharan) alongside luxury commerce.
Brokerage
Initially mediated by Central-Asian pastoralists (Sogdians, Turks, later Mongols).
Linked \text{Rome} \leftrightarrow \text{Persia} \leftrightarrow \text{India} \leftrightarrow \text{China} primarily in luxury goods (silk, porcelain, gems).
Technologies
Saddles, stirrups, and camel domestication critical for desert crossings.
African Connection
Same overland tech adapted to Saharan camel caravans → West African gold–salt trade.
Founding Context (Arabia, \approx 613\,\text{CE})
Founder: Muhammad—religious, social, political leader.
Theological synthesis: Elements of Arab paganism, Zoroastrianism, Judaism, Christianity.
Received revelatory messages via angel → recorded as Quran.
Core Doctrines
Strict monotheism—Allah as sole deity.
Mission to convert infidels and reform society.
Formation of a trans-tribal community (ummah).
Five Pillars
Shahadah: Testimony of faith—one Allah, Muhammad as messenger.
Salah: 5 daily prayers facing Mecca.
Zakat: Alms—2.5\% of income to poor.
Sawm: Fasting sunrise→sunset during Ramadan.
Hajj: Once-in-lifetime pilgrimage to Kaaba in Mecca.
Early Expansion in Arabia
Preaching in Mecca ⇒ persecution ⇒ Hijra to Medina.
Built tribal coalition; conquered Mecca 629\,\text{CE}.
By Muhammad’s death 631\,\text{CE}: Most Arabian tribes unified under Islam.
Leadership Model: Caliph = civil + religious head.
Territorial Surge: Persia, Levant, Caucasus, E. Anatolia, parts of Central & South Asia, N. Africa.
Dhimmi System
Protected People: Jews, Christians, Zoroastrians.
Faced legal, military, political limits.
Jizya tax: Heavy head-tax waived upon conversion; fiscal incentive for Islamization.
Precedents: Governance patterns (dhimmi, jizya) adopted by later Muslim polities.
Rise: Civil war within Rashidun ⇒ Umayyad clan victory.
Capital: Damascus, Syria.
Military Apex
Conquered remaining Sassanid Persia, half Byzantium.
Western push: N. Africa → \text{Iberia (to Fr. border)}.
Eastern reach: Indus basin, into Xinjiang (China) fringe.
Administration & Social Tension
Continued dhimmi/jizya policies.
Preference for Arab Muslim elites over non-Arab converts (mawali) ⇒ resentment.
Abbasid Revolution: Coalition of Arabs + non-Arab Muslims topple Umayyads.
Capital: Baghdad—planned Persian-style metropolis.
Persian-Inspired Bureaucracy: Viziers, diwan system, taxation reforms.
Golden Age Highlights
Advances in astronomy, medicine, algebra, optics, literature (e.g., House of Wisdom).
Translation movement: Greek, Sanskrit, Persian works → Arabic.
Economic Hub
Baghdad at center of Afro-Eurasian routes; profited from spice, silk, gold, copper, salt, slaves.
Connected via camel caravans across Sahara to W. African gold fields (Ghana, Mali).
Islamic Diffusion
By 9^{\text{th}}-century: Islam entrenched in Central Asia, S. Asia, N. & E. Africa, parts of Europe.
Origin: Dispute over rightful successor after Muhammad.
Sunni: Caliph chosen by consensus/qualification.
Shiʿa: Caliph must descend from Ali (Muhammad’s cousin/son-in-law).
Effects
Periodic civil wars, sectarian strife.
Undermined centralized control, especially in vast multi-ethnic empire.
Decline of Abbasids
Loss of provinces east of Egypt (\approx 10^{\text{th}} c.).
Seljuk Turks crush military 11^{\text{th}} c.; Mongols sack Baghdad 1258.
Residual caliphal authority survives in Cairo until 1517 (absorbed by Ottomans).
Ottoman Empire: Sunni hegemon after 1517; controls Mecca/Medina.
Safavid Dynasty: Persian Shiʿa counterweight.
Continued Spread via Trade & Diaspora
Indian Ocean merchants propagate Islam to E. Africa, S. Asia, SE Asia, Indonesia.
Muslim diasporas create cultural hybrids (Swahili Coast, Malay sultanates).
Trade ↔ Religion Symbiosis
Maritime & caravan routes served as conduits for Islam’s expansion; in turn, shared faith lubricated commerce (trust networks, contract enforcement).
Tech Diffusion
Lateen sails, astrolabe, paper, numerals (\textit{hind•sa}), algebra → Europe via Muslim intermediaries.
Ethical/Philosophical Dimensions
Debates on dhimmi rights, just war, taxation intersect with Quranic jurisprudence (Shariʿa).
Abbasid intellectualism influences scholasticism, Renaissance.
Real-World Relevance
Contemporary Muslim world’s geographic distribution mirrors medieval trade patterns.
Sectarian splits (Sunni vs. Shiʿa) continue to inform modern geopolitics.
500\,\text{CE}: Indian Ocean trade fully operational.
613\,\text{CE}: Muhammad’s first revelation.
622: Hijra (start of Islamic calendar).
629: Conquest of Mecca.
631: Death of Muhammad.
632{-}661: Rashidun era.
661{-}750: Umayyad era.
750{-}1258: Abbasid political era; cultural apex 8^{\text{th}}{-}10^{\text{th}} c.
1258: Mongol sack of Baghdad.
1517: Ottoman takeover of Cairo caliphate.
Zakat: 2.5\% income to charity.
Scale indicators on maps: 0,\ 250,\ 500 miles / kilometers.
Five daily prayers: 5 times.