Answer:
American colonists rebelled against to the British rule and created USA with a new system of government. Each state wrote its own constitution. it states gave the new federal government only limited authority.
Hey! It's a good thing I learned this in 5th Grade lol. Okay, pretty sure the answer is longitude. Hope this helped!
No-one lives in Antarctica indefinitely in the way that they do in the rest of the world. It has no commercial industries, no towns or cities, no permanent residents. The only "settlements" with longer term residents (who stay for some months or a year, maybe two) are scientific bases.