20 points. Correct answer=brainliest! Send help .-.

From what source did Leonardo get many of the ideas for his engineering designs?

A. The work of other painters
B. His extensive library
C. His observation of nature
D. His dreams

How does congress have power over the courts

By the late 1930s, how were u.s. officials beginning to view japanese policies of expansion? a. they attempted to join forces with japan so as to increase u.s. territory. b. they warned them to stop expansionist actions or face potential u.s. intervention. c. they sent representatives to japan to work out territorial rights in a diplomatic fashion. d. they became fearful of their military power

Describe the social and economic problems that existed during the coolidge administration, and explain why president coolidge did not address them