It means to move the country from sea to sea. Made by John L. O’sullivan in 1815. It was a area of land between the pacific ocean and the Rocky Mountains. Treat with George Washington. The journey was 200 miles long, and started in the Mississippi Valley. It went over Great Plains and Rocky Mountains. It crossed the North and South Plate river. The Columbia, and the Snake river. Texas won their independence from Mexico, and asked to be in the United States. In 1835. He continued his fathers dream, and got permission for the land grants. They formed a Decree , or official order to keep all immigration from the United States. The Americans were uneasy about this. General Antonio Lopez de Santa Anna became president. The Alamo was a Texas mission, and the Mexican army came to it to fight the Texans. On March 2, 1836 at Washington on The Brazos. Sam Houston. April 21. Remember the Alamo. Santa Anna signed a treaty recognizing Texas's Independence. Because the argument of slavery. December, 29 1845. John k. Polk. New Mexico, Arizona, Nevada, Utah, and part of Colorado. Becknell's route to sell goods. Missouri river Arkansas river Rocky Mountains, New Mexico. Americans began settling in the region. The Santa fe Trail. Mild, Scenic beauty, and abundance of natural resources. They would be safe by the seas, not foreign powers, and help trade. Rio Grande. Nueces river. Agreed upon war, Americans killed on our soil, attack was grounds of war. Disgraceful and cruel, The expansion would bring more slavery Bear flag. General Winfield Scoot. Treaty of Guadalupe Hidalgo, February 1848. Rio Grande. California and New Mexico. Gadsden purchase, strip of land along the southern edge of Arizona and New Mexico. In 1849, California, 49ers. Sierra Nevada. Mexico, South America, Europe, Australia, China. Town Built almost over night! It grew from a tiny village to a huge city of over 20,000. A Jewish immigrant, sold sturdy denim jeans to miners. Mormons. Joseph Smith. He had visions telling him to make a new Christian church, he ended up dead. Brigham Young. Great Salt Lake. 1896.