Why were there only thirteen original colonies?

The number wasn't deliberately chosen. That's just how many colonies had settled in the new world when independence was declared in 1776. Starting with the first colony, Virginia in 1607, new colonies sprung up (Georgia in 1732 was the 13th) and there were thirteen when the American revolution happened.By the 1790s, three new states had joined the Union.

The Constitutional convention was in 1787, when the Constitution was framed.

It is based off of the original colonies and the governments that formed around each. Once the governments were formed boundaries were draw which resulted in the 13 states that were called the American colonies. There was some management through Great Britain since that was the parent nation, but the colonists really had a lot of self direction on most matters.

I am not sure about the committee you mentioned.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.