Frontier History refers to the period in American history when settlers moved westward into new territories, particularly during the 19th century. This era was marked by exploration, settlement, and the establishment of new communities as people sought land and opportunities. Key events included the Louisiana Purchase and the California Gold Rush, which encouraged migration and expansion. The concept of the frontier also involved interactions with Indigenous peoples, whose lands were often encroached upon. The Homestead Act of 1862 played a significant role in promoting settlement by offering land to those willing to cultivate it. This history shaped the development of the United States and its cultural identity.