Which world leader saw the launch of sputnik i, the first man-made satellite to orbit the earth for his country?

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.

Plz i need this answer t-t in a couple of paragraphs, list two reasons why florence is the birthplace of the renaissance. explain how these reasons contributed to the renaissance

Which is one way the executive branch checks the power of the judicial branch a. the executive branch can propose constitutional amendments. b. the vice president breaks ties in the senate. c. the president can propose new laws to congress. d. the president has the power to appoint judges.