What does the rainbow in the sky symbolize

What impact did new technologies in the assembly and manufacturing have on the auto industry in the 1920s

Which is the main inference that can be drawn from adam smith's book the wealth of nations? a) for an economy to work flawlessly, it shouldn't have to serve and moral goals.b) the government must control a free-market economy, or economic problems will arise.c) a free-market economy works well only without the government's interference. d) free trade will only hurt economies and should be stopped by governments.

What was the overall impact of eli whitneys introduction of interchangeable parts?