What was John Dalton right about the atomic model and what was he wrong about

is this a multiple choice question? if so, could i see the answers to give you the right one!

answer; the period of time known as the middle ages;

that would be the steamboat because none of the other things are forms of transportation

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.