How did French philosopher René Descartes contribute to the Scientific Revolution? He invented new scientific instruments.
He developed mathematical principles.
He made discoveries about the universe.
He developed a new way to solve problems.

Need plz? due in 10 will give brainliest which of the following was the most significant aspect of revel's election to the senate? a. his election showed that the u. s. would quickly move past the civil war. b. his election to uphold the thirteenth and fourteenth amendments which gave freed slaves citizenship and voting rights. c. his election demonstrated the states were united in a union once more. d. his election was the first step in opening doors for other african-american political leaders.

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 method did party bosses use to maintain the power of their political machines?