Temperature and humidity.
There is no "American" race, other than the Natives. The majority of Americans today are Caucasoid, being white.
Muslims.
All animals have reproductive organs. The reproductive organs on dinosaurs were most likely located in between the legs (much like the majority of mammalian and reptilians species alive today) The way the tails are mounted the thought is they may have organs like the birds of today.
Sole Proprietorships.
The majority of trains in use today run on diesel fuel.
The North American short face bear ranged from Alaska and Canada to central Mexico and all across the region that is the United States today. It was the most common of early North American bears and a majority lived in present day California.
asia
Active hubs.
The Paiute tribes still exist today in the area known as the "Great Basin". Due to the Indian Reorganization Act of 1934, the majority of the tribes are federally recognized.
The Congress of Industrial Organizations (CIO) and the American Federation of Labor (AFL)
It is estimated that there are still around 4,000 tribes scattered around the USA; however, the Federal Government only recognizes 513 of these tribes still today.