Answer:
The US Department of State functions, as the diplomatic wing of the federal government, handling matters of foreign affairs with other nations and international bodies. The State Department's primary job is to promote American foreign policy throughout the world.
Explanation:
The only option that is not generally a reason why historians study societal change would be "<span>d. to estimate how long it would take to build a road system," since this requires a separate type of research. </span>
1882 was the year the Chinese exclusion act was passed
<span />
