Why did steam-powered ships have an advantage over wind-powered ships?

Give a brief summary/define the holocaust - who was behind it, how it began, what was the goal, and where did it take place? (8-10 sentences). be sure to include at least 2 pictures or a timeline

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

How did nationalism transform the identity of africans