It popularized trade and competition. For example: Portugal was the main trader of spices.
Because they could afford it. The Roman education system was based on the Greek system, so why not learn it in Greece. The Romans education was based on the classical Greek tradition but infused with Roman politics, cosmology, and religious beliefs. The only children to receive a formal education were the children of the rich. The very rich families employed a private tutor to teach their children. Those that could not afford to do this used either slaves or sent their children to a private school.
Poland. Just learned about this, and as far as I know Britain, France, and Italy all benefited from it
In general, yes, immigration during 1830s to 1840s was vital to the industrialization of America, since it was mostly immigrants who first sought employment in the factories that were an essential element of industrialization.
The answer for this question is a budget i hope you do good