Answer:
any commercial transactions or traffic that cross state boundaries or that involve more than one state.
Explanation:
The answer is Labor Unions.
Franklin Roosevelt rose in the hour of need as the great depression took a toll on the Americans.
He had an experience in public oratory and hence impeccable persuasion skills that made him pass the New deal. his experience as Governor also came at hand for him in his presidential career.
How did the invention of the Cotton Gin change America’s economy?
A- Made cotton easier to plant
B- made room for more wheat and less cotton on Southern plantations.
C- Made cotton the dominant crop in the south
D- Made dairy farming popular in the Northeast
the answer c
B - Petroleum
Wood was one of the first energy sources, way before the nineteenth century so you can rule that choice out.
Nuclear Energy is more advanced and closer to the twentieth century so you can also rule that out.
And coal was before petroleum, around mid to late eighteenth century possibly.
Hope this helps!