Answer:
They thought it was necessary because they had to check and make sure each branch doesn't go over their limit of power. I hope that answers your question.
Explanation:
I hope this chart helps
The Freedmen's Bureau was established in March of 1865 to help freed people achieve economic stability and secure political freedoms. Many white Southerners, as well as President Andrew Johnson, challenged the Bureau's legitimacy, sparking racial violence in the South and the ultimate failure of the Bureau.
The Compromise of the 1850s that proposed that California join the Union as a free state was proposed by Senator Henry Clay of Kentucky.
B is the answer you're looking for. There's nothing in the constitution that says the government can't regulate business or social matters.
I know that A and D are part of the first amendment, and C is also in the Bill of Rights.
Hope that I helped!