You are most likely referring to the assassinations of Martin Luther King Jr and Malcolm X. The impacts of both of their assassinations was that the Civil Rights movements actually grew stronger, with more African Americans and white Americans coming together to fight for equality on the streets, in Presidential elections, and through activism in Churches. Both MLK and Malcolm X were good men who fought for the rights of African Americans, and they will forever be remembered for their lasting impression on this nation, not only by other African Americans, but by all Americans.
Internment Camps.
https://en.wikipedia.org/wiki/Internment_of_Japanese_Americans
Correct answer: C) The Cold War was not a conventional war, and its costs are measured by the individual proxy wars.
Explanation:
Both the Korean War and the Vietnam War would factor in as "proxy wars" during the Cold War.
One could argue that there would be ways to chart the costs of the Cold War simply by tabulating what was spent on developing military arsenals that stood ready to be used in the event of direct warfare between the superpowers who opposed each other in the Cold War. As the Cold War continued, the two superpowers (US and USSR) kept escalating their weapons capabilities and stockpiles. It got to the point that if the two sides did plunge into war, they would face mutually assured destruction. Massive amounts were spent on the proliferation of nuclear weapons.
The admission of California into the United States was a divisive national issue because California's entry would upset the nation's numerical balance of free and slave states.