Yes, it is true that the<span> core of the Earth is believed to be composed of iron and nickel, since the inner core is believed to be made of iron, with the outer core being made of nickel. </span>
The cold war started because the United States feared the Soviet Union was trying to control the world. There wasn't an actual war but there was lots of tension and fear of nuclear war.
<span>What term identifies the name of cords and knots of various colors used by the Inca to keep tax and census records?
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-quipus
