What conclusions can you draw about why historians must consult many sources in order to present a straightforward, unbiased account of events in the past?

The conclusion would be in order to have a historical record free from a historian subjective point of view. For example, if there is a need to verify if an emperor carried out an action, the historians would consult various sources to be sure that the action actually take place and was carried out by the said emperor.

Explanation:

2 is armenia i think

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.