2 Points
Which statement accurately describes an important effect of the Columbian
Exchange on Europe?
American diseases led to some of the deadliest and most
widespread plagues in European history
B. Native American ideas about political and religious freedom
caused Europeans to question their leaders.
European populations grew as a result of American foods being
introduced to European diets.
D. Europeans began looking to African slave labor to prevent the
Columbian Exchange from spreading.

i dont know but i need points

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.

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explanation:

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a.) are both appointed for life