Which sentences use a time-related term correctly?
select all correct answers.
a. william of normandy crossed the english channel and defeated king harold ii in a. d. 1066.
b. romulus augustulus, the last roman emperor, was taken prisoner by the german king odovacar in c. e. 476.
c. julius caesar was assassinated in b. c. 44.
d. alexander the great died in 323 b. c.e.

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.

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.

the answer is a) high entry costs