What was the primary body of water use for travel and trade in the hellenistic era

Which of these statements best describes the ambiguity in this excerpt

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 impact did new technologies in the assembly and manufacturing have on the auto industry in the 1920s