Ill give brainliest, a thankyou, 5 points, and 5 stars if correct. In the mid-1800s, Democrats believed that a policy of Manifest Destiny
A. would prevent a war with nations that claimed territory in North America.
B. was less important than developing existing territory in the United States.
C. would boost the American economy and open up economic opportunities.
D. would prevent hostilities with American Indian tribes that lived in the West.

C-Would boost the American economy and open up economic opportunities.

Explanation:

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.

how did the pendleton civil service act weaken the spoils system after president garfield died?

the act forced federal employees to pass competitive exams.

the act said that federal employees could be fired for political reasons.

the act said that company contracts and kickbacks were illegal.

the act stopped the reform movement in its tracks.