<span> René Descartes</span> was the leader of the Scientific Revolution in France, which developed the mathematical system of Cartesian coordinates.
I don’t know what if you have any questions about the
I’ll give you a few to choose from:
-There were plenty of jobs (but low-paying) in America
-Gold Rush
-America had an open door policy (at least until the immigration act)
-Social mobility was possible (unlike restrictive social classes in England)
The first box is number one.