Earth is composed of four main layers, starting with an inner core at the planet's center, enveloped by the outer core, mantle, and crust. The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius.
source: nasa
Answer:
The origin of the aurora begins on the surface of the sun when solar activity ejects a cloud of gas.
Answer:
Removing American Indians will allow white settlers to become wealthier.
Explanation:
Because some states refused to ratify the Articles of Confederation.