united_states | leadertitle | president_of_the_united_states <tsp> united_states | leadername | barack_obama <tsp> united_states | demonym | americans <tsp> 1634:_the_ram_rebellion | country | united_states <tsp> united_states | ethnicgroup | native_americans_in_the_united_states <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 
president barack obama leads the united states which is inhabited by americans. these include the ethnic group of native americans. the country is the origin of the book 1634 the ram rebellion.the united states is the world's third-largest country by both land and total area