Why is the Northeast Plain important to East Asia? A.
It is an alluvial plain.
B.
It has fertile black soil that is important for farming.
C.
It serves as a boundary between China and India.
D.
It contains one of the world’s most populated areas.

the only other powers were germany russia and uk and they were too busy fighting each other wearing each other down   that the us was becoming strong and they were becoming weaker

seismic wave -

an elastic wave in the earth produced by an earthquake or other means.

explanation:

would the answer be physical geography and cultural geography i haven't studied geography but i searched it online and those are my answers.

hope this .

plz mark me as brainliest answer: d