7,969 miles
because United states :Unites
It depends on what unites states you speak of.
Your question depends on how far away from the shores of the United States that border on the Atlantic Ocean you want to measure rainfall.
50
No
Yes
16000 slaves were in the united states
United States is commonly used as a noun, but it can function as an adjective. For example: The Unites States Navy (describing which Navy) The United States border (specificing which border)
To work
mostly protestant
It is New England
Obama