The factor that most contributed to the huge casualties in WWI was the new technology. WW1 happened during a time of huge industrialization and mass-production. This led to the creation of new weapons and warfare technology in general. Many innovations killed a large number of people like grenades, poison gas, artillery, submarines, warplanes, and tanks.
W. E. B. Du Bois demonstrated that limited opportunities and racism shaped every aspect of the lives of African Americans. Africans were discriminated against in various spheres and as a result were limited in the extent they could advance themselves
The Sherman Anti- Trust act originally designed to reinforce the American ideals of "free trade", The Sherman Anti-Trust Act sought to bust up monopolies.