What event lead to the establishment of NASA?

What is one role of congress in determining the federal budget? a. voting on whether to approve proposed budgets b. announcing the budget to the country c. developing budget requests d. signing spending bills into law

Nationalism led to major conflicts following world war i, especially when:

How did european exploration and expansion cause the african slave trade to expand? a. european explorers discovered the slave trade and expanded it across the indian ocean into south asia. b. arab armies captured european explorers and forced them into slavery. c. european traders shipped enslaved africans to work on plantations in european colonies in the americas. d. european explorers captured african people and forced them to work on their ships.