Why did the blacks want to make their way north

There were several reasons behind this requirements.

1st one was obvious, they wanted to escape the slavery and a better, free life. The slavery abolishment move was strong in the north.

The other reason was that the north was more industrialized than the south and south primarily depended on a plantation based agricultural economy. The north offered better jobs and a better pay as well.

Explanation:

d is correct the right of the people to be drafted into the armed forces.

hope this let me know if it is right.

they required less loading and unloading

explanation:

the shipping container improved shipping because it cut down on unloading time by three weeks, eliminated wasted space, and allowed ships to carry.