How did the discovery of an effective vaccine by Louis Pasteur lead to the growth of the Europe's population?

Yea

Explanation:

imma have to go   the third option

sorry if i am wrong hope this

if i am right plz give me brainliest

du boi was considered a radical because he wanted the immediate end for segregation. the biggest different between him and booker t. washington is that, even though washington believed that segregation should be considered illegal, he did not believe at all that a law was needed to keep blacks away from whites and that this would be something natural (to have the races apart) for a long time until society adjusted, while du boi believe that agitation was the only way to end segregation.