united_states | leadername | joe_biden <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 
250 delaware avenue is in the united states where joe biden is a leader.the united states is the world's third-largest country by both land and total area