Explanation Answer:
The Rise of the Merchant Class In contrast, Northern and Central Italy had become far more prosperous, and it has been calculated that the region was among the richest in Europe. ... This change also gave the merchants almost complete control of the governments of the Italian city-states, again enhancing trade.
The last one
Answer:
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The steam boat
The cotton gin and others
I believe it's "<span>it breaks the social contract and people can create a new government."</span>
Slaves were brought to the colonies via boat which they were tightly crammed in