b. it demonstrated to the Soviet union that the United states had the ability to counter its armies in Europe
President John F. Kennedy. Upon taking office, Johnson, also known as LBJ, launched an ambitious slate of progressive reforms aimed at creating a “Great Society” for all Americans. Many of the programs he championed—Medicare, Head Start, the Voting Rights Act and the Civil Rights Act—had a profound and lasting impact in health, education and civil rights. Despite his impressive achievements, however, Johnson’s legacy was marred by his failure to lead the nation out of the quagmire of the Vietnam War. He declined to run for a second term in office, and retired to his Texas ranch in January 1969.
Cactus Hill site has human remains that have been dated to around 20,000 years ago. Given its location in Virginia shows that human beings had reached America earlier than this. This contradicts the theory that postulates humans came to America from Siberia through the modern day Bring Strait. The theory asserts that at the end of the Ice age humans were able to cross to America through the Beringia land bridge and other means such as canoes and rafts around 10,000 years ago.