<span>an expert in or student of history, especially that of a particular period, geographical region, or social phenomenon.</span>
The main way in which these two men differed was that "(A) They both fought for social equality, but only DuBois fought for <span>economic equality as well," since Washington was more in favor or an "incremental approach". </span>
All these planets together are called a system. The Latin word for the Sun is Sol, so we call this system the Solar System.... hope this helps ;))
Is there more to the question?
