Anybody know the answer to these questions??

What was the biggest role in connecting rome with rich regions

What originally inspired countries to band together in intergovernmental organizations (igos) ? (apex) a. climate change b. a period of peace c.population decline d. global conflicts

Human beings spread all around the world over a period of millions of years. identify when humans arrived in different regions of the world. 200,000 years ago 100,000 years ago 40,000 years ago 30,000 years ago