He wanted to use the Mississippi for trade
The ancestors of living Native Americans arrived in what is now the United States at least 15,000 years ago, possibly much earlier, from Asia via Beringia. A vast variety of peoples, societies and cultures subsequently developed.
I believe it was by giving support to the European countries economically and politically.
They're the only emirates who have the power to veto over critical matters, and they're an absolute monarchy. They both also make a decent amount of money, just different amounts.