Colorado...................
17-1800's
I know that James Hutton is considered a father of modern geology and he was born during some where in the 1720's so that's the closest answer, also Charles Lydel was born during the late 1790's.
The NAFTA (North American Free Trade Agreement) is the agreement that has lowered trade barriers between Mexico and the rest of North America. It was signed January 1, 1994.
Are you referring to a picture? if not, stars range in size from neutron stars, which vary anywhere from 20 to 40 km in diameter