Help! Please any explanation

I would say C

Explanation:

I think this because in many businesses in the U.S, many are exporting and importing goods from various locations. Amazon for example, uses the advantage of demand for various products around the world and globalization to thrive in e-commerce.

b.   jim crow laws were enacted in northern states.

was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south