Final answer:
During its imperialist period in the late 1800's and early 1900's, the United States primarily acquired land in the Pacific. They annexed Hawaii and purchased Alaska from Russia. They also took control of several Pacific islands like Guam and the Philippines.
Step-by-step explanation:
In the late 1800's and early 1900's, the USA acquired land primarily in the Pacific during its imperialist period. This period marked the United States' expansion beyond its mainland borders. One of the primary acquisitions during this time was Hawaii, marking the United States' first major move towards acquiring territory in the Pacific for the purpose of its empire. Another major acquisition was Alaska in 1867, purchased from Russia. Additionally, the USA obtained several islands in the Pacific like Guam and the Philippines.
By the end of President Taft's term in 1913, the United States had clearly marked its interests across different parts of the globe, spanning from the Pacific to Asia. These acquisitions also marked a shift in the American foreign policy that included methods of military intervention and economic coercion. The United States was seen as the predominant power of the Western Hemisphere, and few nations would challenge this until the Cold War era.
Learn more about US Imperialism