Answer:
It's the big flat continent at the bottom.
Thank you for posting your question here at brainly. Below are the choices that can be found elsewhere. The answer is A.
<span>A.
Airports in the early 1920s catered to municipal and regional travel, while airports in the 1930s served as hubs for travel between countries.
B.
Airports in the early 1920s had larger runways and airport space, while airports of the 1930s had smaller, more efficient layouts.
C.
Airports in the early 1920s catered to travel between countries, while airports in the 1930s served as hubs for regional and municipal travel.
D.
Airports in the early 1920s were located in West Coast cities, while airports in the 1930s were located in East Coast cities. </span>
<span>The best answer is (d) water from snowmelts. The American Southwest has many mountains that catch moist air moving westward (from the Pacific) that falls as snow during the winter. The snow melts gradually during the spring and summer when there is little precipitation. The melted snow runs off the mountains into rivers and streams that can be tapped by irrigation pumps. The snowmelt also sinks into the ground, replenishing underground aquifers that can be tapped by wells in the valleys where farming takes place.</span>
hi
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