The territory gained in the Treaty of Guadalupe Hidalgo is also known as the Mexican Cession. The reason the US was able to gain this land from Mexico was due to their military victory in the Mexican-American War. This treaty gave the United States several different modern day states including California, Arizona, New Mexico, and parts of Colorado/Utah. This treaty helped America spread their influence/power during the middle of the 19th century.
Santa Anna rejected the state constitution
Answer:
During the times of the Indian Removal Act, and the famous "Trail of Tears", the president of the time: Andrew Jackson, ordered the removal of several Native Peoples from the Southeastern United States, to the designated indian area in Oklahoma.
The ideas was to make up room for White American Settlers.
During the force evacuation of the Native Peoples, many of them perished due to disease, malnoursihment, or fatigue. This is why the event came to be known as the "Trail of Tears":
