Dark matter has been given this name because it doesn't seem to interact with regular matter in any way. It doesn't collide with it, or absorb energy from it. We can't see it or detect it with any of our instruments. We only know it's there because we can see the effect of its gravity.
Answer:
The United State is the last to join.
Explanation:
C because the progressive movement was meant to widen social an political reforms
His leagacy is to expolre
The Industrial Revolution started in England because <span>It had a growing population and large deposits of coal and iron.</span>
