2. Why did the Mongol invasions across most of Asia and much of Europe have such a tremendous impact?

Mainly because their empire was the largest empire in the world. Containing the most diverse amount of social classes and races. They practiced religious tolerance which at that time was a huge leap forward in social development. They also allowed for large and widespread free trade across there empire. So overall they found new ways to further knowledge in trade, culture, and even tactics of war.

Explanation:

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in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.