1. Why did the author note that President Johnson signed the Civil Rights Act into law in the same room that President Lincoln signed the Emancipation Proclamation?

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation:

they usually pass federal laws

and sometimes in the elections of the president

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