Factories made it possible to make more items than before and in higher quality and also for cheaper amounts of money. This led to a huge expansion in consumption of goods and a creation of a consumer culture. This also led to the rise of advertising and which led to huge growth of the market and the company owners stared earning more and more and developing the economy.
Unrestricted Submarine Warfare.
Germany attacked whatever because of this tactic, also taking out vessels carrying US citizens, which is unacceptable to the US.
All of those areas are dominated by men so their saying for it to be equal women need to partake in important things like that and have a say in those things like men