Why was the fifteenth amendment necessary?

1.) there was no preexisting provision to allow former slaves to become citizens.
2.)the emancipation proclamation only freed slaves in the states that had seceded.
3.)freedmen and women needed government support to begin farming on their own.
4.)many freedmen were denied the right to vote.

Option 4

Explanation:

At that time the freedmen were not allowed to vote so Abraham Lincoln established the 25th Amendment so the freedmen could vote.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

b.

one company controls all the means of production of a product.

~coco