Technological advances have aided the industrial growth of the united states. what federal government policy has been most responsible for technological innovation?
a. granting of patents
b. imposition of tariffs
c. provision of subsidies
d. offer of tax credits

the answer is C.

Explanation: Technological innovation has helped US a lot during the growth of industry. Some policy adopted by federal government gave a head start to the technological innovation. Among these provision of subsidies aided a lot. When the federal government financed the R&D programes  the innovation of technology was increased.

answer: the third option is your answer

explanation:

these civilizations were located around fertile rivers, where they could produce an abundance of crops