Answer:
SEOUL IS THE Capital city of South Korea
I think its A but I'm not positive about this one.
They changed the two-field crop rotation to a four-field crop rotation which allowed the farmer to grow food more consistently and the rotation from a root vegetable to a grain in the fields also allowed the cattle to be fed and the excess grain to be sold
2) Earth's inner core is made up of IRON.
3) The earth's crust is thickest when it is below the continent. It is about 25 miles thick below the continents.
4) Earth's mantle has 3 layers. Mesosphere, Asthenosphere, and Lithosphere.
5) Tectonic plates make up Earth's outer shell and are made of crust and uppermost part of the mantle.