As far as a threat, North Korea has been seen as such for many years (since WWII), when North Korea sided with Russia. America and its Capitalism were not fond of the Communist party, and so we have really been fighting/being concerned about Russian influence.
Historically North and South Korea have been in conflict many years before America and Russia got involved. When we did though it got worse.
Trump has done very little to resolve this, some would say he is making it worse.
AND as for any current events ask Google!
Crust:outer silicate solid crust
mantle:highly viscous
core:solid inner core
The correct answer is - carving terraced farmlands.
The Incas revolutionized the agriculture in South America by starting to use the carved terraces for production. With this technique, the Incas managed to maximize the arable land area, and to perform farming on places where naturally will be impossible. This method is widely used nowadays, and since the amount of arable land is reducing in the lowlands, it is of great benefit for food production in places that are not suitable for building.
Answer:
because the sun heats the Earth more at the equator than at the poles.
Explanation:
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The main goal of the revolutionary forces in Germany after the war was to totally remove the Nazi system from most countries of Europe. This was a time in history known as the Great Holocaust where a lot of innocent blood was shed because of the "cleansing" that Adolf Hitler commanded. Thousands of Jews were killed because of this and as a result many have revolted against the Germans and other foreign countries intervened to end this, particularly the United States of America. They gave aid to the Europeans after the war.