What did they gain from westward expansion?

Westward expansion in the United States resulted in significant territorial gains, including vast lands rich in resources and opportunities for agriculture and settlement. This movement facilitated the spread of American culture and ideals, while also contributing to the economic growth of the nation through new trade routes and markets. However, it often came at the expense of Native American populations, leading to displacement and conflict. Overall, westward expansion reshaped the nation's Demographics and economy, laying the groundwork for its emergence as a continental power.