Why did cortés want moctezuma to address the people?

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.

How was the declaration of the rights of man similar to and different from the declaration of independence

What are two things china and canada have in common