In 1838 and 1839, as part of Andrew Jackson's Indian removal policy, the Cherokee nation was forced to give up its lands east of the Mississippi River and to migrate to an area in present-day Oklahoma. The Cherokee people called this journey the "Trail of Tears<span>," because of its devastating effects. this is yo answer
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Much of history would be lost forever if it wasn't written down. Doing it by hand is tedious and not very consistent. Besides the ink fades off over time with some cases. With the printing press, it's much more clear and consistent to read. Also the printing press allowed for anyone to get access to books. Before it was the elite that could only get access.
Cities developed professional firefighting and police forces.
I believe it was by giving support to the European countries economically and politically.