B. Be Informed. A good voter should always have a clear idea of the situation at hand to make sure their vote is fair and what they actually want.
The Nile river give transportation, fertile soil, water and food(fish)
By 1279, the Mongol Empire covered over 33,000,000 km² (12,741,000 sq mi), up to 22% of Earth's total land area. It held sway over a population of over 100 million people.