united_states | leadertitle | president_of_the_united_states <tsp> united_states | leadername | john_roberts <tsp> united_states | leadername | paul_ryan <tsp> 250_delaware_avenue | location | 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 
in the united states where the leader is known as the president of the united states. john roberts is the chief justice. one of the leaders is paul ryan and it is where 200 delaware avenue is located.the united states is the world's third-largest country by both land and total area