What is a frontier?%0D%0A%0D%0A(1 point)%0D%0AResponses%0D%0A%0D%0Agovernment gifts of land%0D%0Agovernment gifts of land%0D%0A%0D%0Aextending the nation beyond its existing borders%0D%0Aextending the nation beyond its existing borders%0D%0A%0D%0Aan area of lawlessness%0D%0Aan area of lawlessness%0D%0A%0D%0Aland that forms the farthest extent of a nation’s settled regions

A frontier is a land that forms the farthest extent of a nation's settled regions.