Pls help I don’t know ahh

Which is not an abundant natural resource found in africa?

What was true about sharecropping? a. landowner provided free tools and seeds.b. workers could leave the land if they failed to make money.c. landowners often took advantage of workers.d. workers received ownership of the land they farmed after a set number of years.

Which number on the map indicates the farthest reaches of alexander conquests?