The preemption act most directly dealt with
(a) the sale of government land
(b) the right of the united states to attack nations perceived as a threat
(c) the passage of strict slave laws to suppress future slave uprisings
(d) the federal government’s right to remove native americans from
lands planned for future expansion
(e) the states’ right to nullify federal mandates

you aint got nothin on my lil weenies

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.