According to the winstin churchill what was the iron curtain

Which statement best summarizes the origins of world war ll

Ineed with what i should write for my research paper. my topic is history of slavery. 1800 words. all i need is what to write in each paragraphs. like when the research paper has titles for each paragraph and it explains the tile in each paragraph. for example when did slaverh begin? why did it begin like an outline.

What country aided north korea in the korean war?