united_states | leader | barack_obama <tsp> united_states | capital | washington,_dc <tsp> akron,_ohio | country | united_states <tsp> united_states | ethnicgroup | african_americans <tsp> akron,_ohio | ispartof | summit_county,_ohio <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 
washington dc is the capital of the united states. which is led by barack obama and where african americans are one of the country's ethnic groups. the us is home to akron. which is in summit county. ohio.the united states is the world's third-largest country by both land and total area