The period of heaving Industrialization that took place during this time, especially in the US brought many new jobs to the working class which increased incomes and purchasing power.
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1.) A is the answer
2.)B is the answer
3.)A is the answer
I think Some of the Italian cities became great centers of banking, commerce, and industry. ... It was, therefore, relatively easy for the growing cities to expand into the surrounding countryside by subduing the nobles and annexing their land.
You can talk about the boarder crisis along the Estonian boarder and Russian boarder. The is called a crisis because there is a tradition steeped kingdom called the Seto caught directly in the middle of it(their kingdom is split half and half).