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 
african americans are an ethnic group within the united states which is where barack obama is a leader and the capital is washington. d.c. akron is located within summit county. ohio in the u.s.the united states is the world's third-largest country by both land and total area