The similarity between the Mayas, the Incas, and the Aztecs is that they all had control of a rather large empire(s) that eventually came to an end.
A . The Emancipation Proclamation did not provide legal protection for the civil rights of African American.
The Emancipation Proclamation did not give them any specific rights except for their freedom. It made it illegal to own a person, but they still experienced racism. The government created the 14th and 15th Amendment to provide them with some basic rights.
I’m pretty sure the answer is A, C and D
The iron curtain was the wall that separated communism from the rest of Europe during the cold war
Congress was completely ineffective in preventing the Civil War because the Southern states still seceded. This option is best drawn because of the fact that that in the case of the 2nd option, they did not delay the war in any way. It was only a matter of time until the war happened, and nothing could have stopped it from happening. Once the Southern states made the decision to secede, the war was inevitable.