From an overall perspective, A would be the best answer. Since the Nile River has always been one of the biggest rivers in history, it would most likely sustain life for the people. As well as the mediterranean, people for thousands of years relied on the Mediterranean Sea for their food and even their transportation.
This area would be the tropics if that's what you're asking for If, not leave a comment below for what the question really is.
Answer:
Desde el siglo III d.C. el Imperio Romano entró en un proceso de crisis alimentada por los ataques de los pueblos bárbaros (término que debe traducirse por extranjero), tanto en el continente europeo como en la parte asiática; la debilidad del ejército, y la crisis económica.
Oceanic Trench or Deep Sea Channel, it is a narrow, long and having a sharp inclination depression in the lowermost deep-sea in which happen the extreme oceanic depths. They normally form in places where once the structure of the earth's crust plate <span>is forced below the edge of</span> another. While Abbysal plain is a beneath the surface of the water plain on the deep ocean floor, typically found at depths approximately 3,000 meters and 6,000 meters. It is in a horizontal position largely between in a mid-ocean ridge and a foot of a continental rise. Almost 50% of the Earth’s surface was sheltered by Abbysal Plains. They are the smoothest and flattest and not so discovered areas on Earth.
The answer is Agriculture.