united_states | leadername | barack_obama <tsp> united_states | demonym | americans <tsp> united_states | capital | washington,_dc <tsp> 1634:_the_ram_rebellion | country | united_states <tsp> united_states | ethnicgroup | asian_americans <sep> the united states of america (usa or usa), commonly known as the united states (us or us) or america, is a country primarily located in north america it consists of 50 states, a federal district, five major unincorporated territories, nine minor outlying islands, and 326 indian reservations the united states is the world's third-largest country by both land and total area 
americans inhabit the u.s whose capital is washington d.c. and whose leader is barack obama.the united states is the world's third-largest country by both land and total area