united_states | ethnicgroup | african_americans <tsp> united_states | leader | barack_obama <tsp> albuquerque,_new_mexico | leadertitle | mayor_of_albuquerque <tsp> albuquerque,_new_mexico | country | 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 
the leader of the united states was barack obama. the leader of albuquerque. new mexico. which is located in the united states. is the mayor. african americans are among the ethnic groups in the u.s.the united states of america (u.s.a. or usa) is a country primarily located in north america