The name for an area where the borders are continually changing are Shatter Belts
The new Kiowa and Plains Apache homeland lay in the southwestern plains adjacent to the Arkansas River in southeastern Colorado and western Kansas and the Red River drainage of the Texas Panhandle and western Oklahoma.
Hope this helps; have a great day!
Option C
East Asia, South Asia, Europe, North America correct order from largest to smallest, according to their populations
<u>Explanation:</u>
Asia the largest in words of both area and population. Obtaining the most extensive in squared measures by a large boundary also sets Asia at an eminence population-wise. Asia currently has 62% of the world’s population. In which East Asia is highly populated than South Asia. Europe attains in at number three on population rankings, with a 2019 survey.
The United Nations Population Division assumes its population to diminish over the following decades due to lowering fertility measures. North America is where the pair of lists conflict in their rankings because this continent's population is not increasing as quickly as Asia's. North America is third in the area, nest to Europe based on population.