How did the success of west african kingdoms contribute to the development of kingdoms in western and southern africa? as the populations of western kingdoms grew, overpopulation caused citizens to migrate east and south to build new empires. as people from other continents came to find jobs in western empires, native citizens moved east and south to escape foreign influence. as trade for goods from distant lands flourished, native citizens moved east and south to discover new goods and people with whom to trade. as more foreigners arrived so did new diseases, leading citizens to migrate east and south to save their families from suffering and possible death.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

        i'm fairly sure that the correct answers are 2 and 3.

        i used both my knowledge of world history and the process of elimination to obtain these answers. option 1 cannot be a possible selection because the mandate of heaven belongs to ancient chinese philosophical belief. option 4 sounds like it would benefit the region than detriment it. however, both 2 and 3 explain a potential reason for what could have contributed to the fall of the roman empire.

      hope this ! if i were you, i'd get a second opinion, because i haven't taken this course for a year. best of luck!

***websites that me understand the curriculum better last year are and ***