The bombing of Pearl Harbor brought the United States into WW2. The United States stayed out of the way until this event because it was the breaking point for the nation. America had been attacked without what they deemed was a good reason and hundreds had been killed and injured.
A "Second Reconstruction", sparked by the civil rights movement, led to civil-rights laws in 1964 and 1965 that ended legal segregation and re-opened the polls to Blacks. The laws and constitutional amendments that laid the foundation for the most radical phase of Reconstruction were adopted from 1866 to 1871
Answer:
Letter C which is Military