The united states features a number of different due to its diversity.

The United states features a number of different SOCIAL ENVIRONMENTS due to its diversity. 
Diversity refers to differences in beliefs, religions, cultures, political orientation, etc. of a set of people. 
The United states of America has people from all over the world living and working in the country. These people bring with them their religions, cultures, beliefs, etc,thus creating different types of social environments in the country.