Explain to me the importance of the Eureka Diamond and how it was used against the people of Africa

um.. so the eureka diamond was the first diamond discovered in South Africa.

This kid kept it for a while.I know that for sure.  the eureka diamond is VERY famous:)

Explanation:

i think the answer is c, rivers.

explanation:

sometimes, borders fall along natural boundaries like rivers or mountain ranges. for example, the boundary between france and spain follows the crest of the pyrenees mountains. for part of its length, the boundary between the united states and mexico follows a river called the rio grande. the borders of four countries divide africa’s lake chad: niger, chad, cameroon, and nigeria.

b is the answer i am assuming