It would be King Leopold II of Belgium that saw the nation of Congo as an opportunity for Belgium to acquire its first colony and compete with other European powers in imperialism and colonization race in the world. He was known for his harsh and cruel treatment to the native inhabitants in Congo.
Karl Marx wrote Das Kapital and co-authored The Communist Manifesto
Hey:)
I think the reason would be <span>Declining birthrates.
hope that's helpful</span>