Answer:
If there is a disaster a disaster system management system would be effective in organizing groups to help clean up, seek help, and look for survivors.
The Romans knew of seven bright objects in the sky: the Sun, the Moon, and the five brightest planets. They named them after their most important gods. Because Mercury was the fastest planet as it moved around the Sun, it was named after the Roman messenger god Mercury.
The answer is.....b. the Black Sea
Greek civilization developed into independent city-states because Greece's mountains, islands, and peninsulas separated the Greek people from each other and made communication difficult. The steep mountains of the Greek geography also affected the crops and animals that farmers raised in the region.