How did british railroad workers solve the problem of finding materials to build foundations

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 does the term “escalation” refer to?

The low and midlevel clouds that look like cotton balls are