The Great American Total Solar Eclipse on Monday, August 21, 2017 is the first total solar eclipse to cross the continental United States from coast to coast in nearly 100 years the last one was in 1918 and also passed over the Bahamas. (Here is the 2017 Eclipse Map)
This is also the first time a Total Solar Eclipse is passing exclusively over the USA since 1257, a good 760 years ago and 519 years before the United States became a country. NASA eclipse Map of 1257.
There is a total Solar Eclipse April 08, 2024 crossing Mexico, Canada, and Central America – as well as the USA but not from Coast to Coast. Map of 2024 Eclipse HERE
January 25, 2316 is the next time a Total Solar Eclipse exclusively passes over the the USA. 299 years from now.
Totality falls along a specific line and you must be somewhere inside that line of totality to have the total Solar Eclipse experience. Otherwise, for those in the United States watching the eclipse it is only possible to see part of the Eclipse and how much you see depends on where you are.