<span>A latitude coordinate of 90° north is located at the north pole.
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Earth is always changing, always moving.Convection current cause magma to rise and fall, moving earth's surface in different directions.
The reason why Greenland is so sparsely populated is because, despite its name, Greenland is actually covered with ice (almost 80% of the territory is ice), meaning that it's very hard for people to settle.
Japan took over Korea and controlled them until the end of the second world war, Japan also attacked America not just due to the fact of their isolation but also for other reasons, and they started war with China.
At least 3.5 billion years