PLEASE HELP ME!
How did Muslims play an important role in the development of Africa?
A. Assisted in nation-building
B. Created commercial networks between parts of the continent
C. Introduced literacy
D. All of the above

What school are you from and what state are you from?

Identify, in detail, three environmental effects of agriculture and explain how the actions of farmers cause them. what is the relationship between poverty and obesity in america and why? what are genetically modified organisms? list two pros and two cons for using genetically modified organisms. y'all this is due !

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?