Based on my knowledge, the scramble for Africa was largely because the industrial revolution was springing up all over the world in largely European countries and they were at a point where resources were running out. Gold and other valuable metals were discovered in Africa as well as timber. The surplus of resources in Africa made it very valuable to these industrial countries so they all made a huge "scramble" to Africa. Also, the idea of merchantilism, the idea that the amount of land a country owned defined its wealth, was still very popular so these countries wanted to make a huge land grab.
Answer:
B. Rivers allowed for the mining of mineral resources.
The United States emerged from the war as a world military and industrial leader. Unlike the war-torn cities of Europe the homes and industries of the nation were relatively unscathed by the Great War. The late entry of the US meant that fewer men had lost their lives than in Europe
