The United States created the Marshall Plan (1947) as a program to "<span>(3) provide economic aid to war-damaged Europe" mostly so that another war would not develop. </span>
It is significant because we got more resources
The answer to this is federalism
According to our current knowledge, planets are formed around a new star by condensing in a disc of molecular gas and dust, embedded within a larger molecular cloud. Condensation increases until they become giant planets, which are heated, then cleanse their orbits in the disc and possibly bend it.