"Which" or "Who"

Mrs. Orozco is a teacher. She works at Grass Valley.

Each colony had its own assembly. The assembly made laws.

Amillion has blonde hair. He likes to eat Cheez Its.

The British taxed the American a lot. It made the Amerian angry.

George Washington was the first President of the United States. He helped win the American win in the Revoluationary war.

John Adam was the second president of the United State. He was a strong supporter.

I adopted a cat. He had only three legs.

The British wanted to tax the American. The American refuse to pay taxes.

Thomas Jeffereson was the author of the Declaration of Independace. It helped the colonies.

The dog bark at the tree. The tree was green.