Manifest Destiny Study Notes

Manifest Destiny is the belief that Americans were destined by God to expand across North America.
The concept is visually represented by paintings depicting struggles of the journey with religious undertones, such as shadows of crosses.
As settlers moved westward, they faced numerous challenges, including harsh terrains such as mountains and deserts.

American expansionism led to conflicts with European nations, particularly focusing on former Spanish territories that became part of Mexico post-independence (1820).
The term "frontier" refers to the unique geographical and social landscape of the United States, distinguishing it from other nations.
Treaties signed by the U.S. government with Native Americans were often broken, leading to distrust among Indigenous populations.

Many American settlers from the southern region, particularly Louisiana, sought to move west into areas now controlled by Mexico.
American settlers were expected to adopt Mexican citizenship, convert to Catholicism, and not bring slaves, but they largely ignored these regulations.
Santa Anna, a key Mexican military dictator, viewed the American settlers as a threat to his authority.
Tensions escalated as settlers declared independence, citing their rights to self-rule.

Stephen Austin: Known as the founder of Texas, he is significant in U.S.-Mexican relations.
Santa Anna: The Mexican military dictator known for his authoritarian rule and eventual conflict with Texan rebels.
- He imprisons diplomats, such as Stephen Austin, undermining diplomatic relations and leading to the independence of Texas.
Texas Revolution: Following the imprisonment of Austin and other tensions, Texan settlers declared independence from Mexico.
- The Battle of the Alamo resulted in the total annihilation of Texan forces, which became a rallying cry for independence.

The Texans, led by Sam Houston, eventually revolted successfully against Santa Anna at the Battle of San Jacinto, capturing him and forcing recognition of Texas independence.
Santa Anna declares the treaties signed under duress invalid; however, his own actions, including the massacre of surrendering Texan soldiers, highlighted his disregard for military ethics.

The resulting independence led Texas to seek annexation into the United States, although technically, it still remained part of Mexico.
Annexation posed potential conflicts with Mexico and led to tensions with Britain and France.
The American public's sentiment was largely in favor of expansion and Manifest Destiny, which characterized the period.

James K. Polk's presidential campaign focused on expansion, advocating for the annexation of Texas and other territories like Oregon.
- The slogan "54-40 or Fight" reflected Polk's ambition to lay claim to the Oregon territory, which was eventually settled through diplomacy at the 49th parallel.
Opposition to territorial expansion sometimes stemmed from concerns over the spread of slavery into newly acquired land.

The war initiated partly due to the dispute over territories and resulted in major territorial gains for the U.S.
The Treaty of Guadalupe Hidalgo ceded significant land, including present-day California, Nevada, Utah, Arizona, New Mexico, and parts of Colorado.
Gold was discovered in California, leading to massive influxes of settlers and economic opportunity, influencing American society.

The incorporation of new states raised critical questions about the future of slavery in these territories, igniting fierce political debates that would shape the upcoming Reconstruction era.