Write a 5 sentence summary about gravity.

Gravity is the force that pulls all elements of matter together. Matter refers to things you can physically touch. The more matter there is, the greater the amount of gravity or force. This means that the Earth or other planets have a great deal of pull and that everything on Earth is pulled back to Earth.

by creating a labor shortage that pushed the continent toward a market economy

the indians crossed artificial boundaries, setting the stage for conflict