1.Why is the US Constitution so hard to amend?

because they wanted to lock in the political deals that made ratification of the Constitution possible.

Explanation:

cuz

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

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.