When did thomas edison first make his impact on culture and society? in the second half of the 1700s in the first decade of the 1800s in the beginning of the 1900s in the mid-1900s

whose power in the senate is equal to the power of the speaker of the house?

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: