Which historical development was a catalyst for the political and social change discussed in the source? War old war l the Crimean war the Russo Japanese war world war LL

Draw conclusions  why might a cause like italian unification successfully draw people of very different backgrounds together?  

All i need is an outline i need with getting started with a research paper. i need with an outline for history of slavery. i don’t know how i should start it end. i need with an outline.

The date a source was created is considered part of its historical context intended audience purpose point of view