1. Annexation of Texas Anti-slavery forces opposed Polk’s theory of Manifest Destiny. Anti-slavery forces opposed Polk’s theory of Manifest Destiny. Polk did NOT annex Texas. This was done by Tyler three days before he left the White House. Polk did NOT annex Texas. This was done by Tyler three days before he left the White House. President James Polk was able to accomplish 4 things: 1. Reduce tariff. 2. Restoration of independent Treasury. 3. Acquisition of California. 4. Settlement of Oregon dispute. President James Polk was able to accomplish 4 things: 1. Reduce tariff. 2. Restoration of independent Treasury. 3. Acquisition of California. 4. Settlement of Oregon dispute.

2. Treaty of Guadalupe Hidalgo This treaty was signed in February 1848. This treaty was signed in February 1848. 1. U.S. received the American Southwest; New Mexico, western Colorado, Utah, Arizona, Nevada, and California. This was northern 1/3 of Mexico. 2. U.S. agreed to pay $15 million “conscience” money. 3. Assumed claims of U.S. citizens against the Mexican government for $3.25 million. 4. Rio Grande was accepted as the boundary. 1. U.S. received the American Southwest; New Mexico, western Colorado, Utah, Arizona, Nevada, and California. This was northern 1/3 of Mexico. 2. U.S. agreed to pay $15 million “conscience” money. 3. Assumed claims of U.S. citizens against the Mexican government for $3.25 million. 4. Rio Grande was accepted as the boundary.

3. Wilmot Proviso 1846 1846 Representative David Wilmot of Penn., introduced legislation to prohibit slavery in all territories taken from Mexico during the Mexican War. Representative David Wilmot of Penn., introduced legislation to prohibit slavery in all territories taken from Mexico during the Mexican War. This proviso became a symbol of the issue of slavery in all territories. This proviso became a symbol of the issue of slavery in all territories.

4. Gadsen Purchase 1853 1853 The railroad builders wanted a southern railroad route to the new Pacific territories. James Gadsen, a minister to Mexico, approached Santa Anna, who was again President of Mexico; about purchasing more Mexican land. The railroad builders wanted a southern railroad route to the new Pacific territories. James Gadsen, a minister to Mexico, approached Santa Anna, who was again President of Mexico; about purchasing more Mexican land. This purchase gave the U.S. an area of about 21,000 square miles, including the coastline of the Sea of Cortez. This purchase gave the U.S. an area of about 21,000 square miles, including the coastline of the Sea of Cortez. So they cut off 9,000 square miles and returned it to Mexico. So they cut off 9,000 square miles and returned it to Mexico.