Answer:
displacement
Explanation:
he's angry that he did'nt get a rasie
He thought he could free slaves in the rebel states becuz he thought that if he frees slaves than there will be more men in his troops he could use those free slaves to increase the men.and he didn't free slaves in the union part becuz people are already getting mad at him. the reason for this is that all the free slaves are going to take the white peoples jobs in the union.and Abraham didn't want the unions to be more mad at him and eventually go against him
B. The work once done by skilled workers was now done by machines and unskilled workers.
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Mass-production techniques and technology called for setting up huge factories with large work force. It created a lot of jobs but due to the division of labor, the skill requirements for a particular job were quite monotonous. Skilled workers were replaced by machines and unskilled machine operators that could perform a single task instead of an array of tasks.
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Leif Ericsson was an explorer from Europe, to be said that he was the first European to land in North America.
Hope this helps