The country correctly paired with its primary source of wealth in its New World colonies it's A) Dutch: trading furs.
The Dutch have been sending ships annually to the Hudson river to trade fur since Henry Hudson's voyage in 1609. It ultimately proved impossible to monopolize due to the illegal fur trade.
Employment. According to Lesley Hall, an historian and research fellow at the Wellcome Library, “the biggest changes brought by the war were women moving into work, taking up jobs that men had left because they had been called up.” Between 1914 and 1918, an estimated two million women replaced men in employment.
B. Enlightenment
I say this because many of the ideas of the Declaration of Independence come from enlightenment thinkers, and philosophers.
For example,
John Locke was one of the philosophers that introduced the idea of social contract, and the idea of natural rights.
Had I been an unemployed man, as most were, I totally would have supported Roosevelt’s ideas because he created jobs. One of he worst things for a country is men without jobs. If men have jobs, their mind is busy, they aren’t bored. If men don’t have jobs? They can become dangerous. Roosevelt’s policies benefitted the working man, which is why the working class supported him.