united_states | ethnicgroup | african_americans <tsp> united_states | leadername | barack_obama <tsp> a_fortress_of_grey_ice | 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 
a fortress of grey ice is from the united states where barack obama is the leader and the african americans are one of the ethnic groups.the united states is the world's third-largest country by both land and total area