Answer:
The Red Scare was hysteria over the perceived threat posed by Communists in the U.S. during the Cold War between the Soviet Union and the United States, which intensified in the late 1940s and early 1950s. (Communists were often referred to as “Reds” for their allegiance to the red Soviet flag.) The Red Scare led to a range of actions that had a profound and enduring effect on U.S. government and society. Federal employees were analyzed to determine whether they were sufficiently loyal to the government, and the House Un-American Activities Committee, as well as U.S. Senator Joseph R. McCarthy, investigated allegations of subversive elements in the government and the Hollywood film industry. The climate of fear and repression linked to the Red Scare finally began to ease by the late 1950s.
that should help :))
James K. Polk (1795–1849) was the 11th President of the United States. ... Manifest Destiny—the belief that Americans were destined by God to conquer the continent to the Pacific Ocean—soon came to embody the governing philosophy of the Polk administration and its ardently expansionist aims.
Polk was backed by many in the United States who believed they had the God-given right to rule the territories to the west. ... Manifest Destiny was also provided as a justification to drive Native Americans from their lands in the West to make way for further expansion.
