Answer:
Rubber
Explanation:
Leopold extracted a fortune from the Congo, initially by the collection of ivory, and after a rise in the price of rubber in the 1890s, by forced labor from the natives to harvest and process rubber.
<span>B) lincoln's election in 1860</span>
Three benefits of the plow are greater possible yields, the use of residue of the remaining crops as fertilizer and a reduced amount of weeds. The correct options among all the options that are given in the question are the first, second and the penultimate option. I hope that the answer has come to your great help.
