What was the growth of US to pacific ocean called?

The growth of the United States to the Pacific Ocean is known as westward expansion. It refers to the process of exploration, settlement, and acquisition of territories by the United States as it expanded its boundaries from the East Coast to the West Coast. This expansion occurred primarily during the 19th century and involved various events and factors such as the Louisiana Purchase, the Mexican-American War, the California Gold Rush, and the construction of the transcontinental railroad.