What was the purpose of the three-fifths requirement?
Where did that requirement come from?

What was the purpose of the two-thirds requirement?
Where did that requirement come from?

What was the purpose of the 2-votes-per-state provision?
Where did it come from?

What was the purpose of the electoral college?
Where did it come from?

These really are questions.

Not rhetorical questions.

Answers to follow.