If US settlers decided to settle in Texas, they would be covered by the Mexican Colonization Law that stated that they could get large pieces of land cheaply, they would have tax cuts, and they would also have increased protection from the Mexican government.
I would say 10,000 years ago. I did heard and read it in a book. I'm not too sure who the first man was...
Answer:
The answer is Native Americans.
The microscope by using tiny glass leanse to see the cells.