Which development of the 1920s was caused by the increase in time-saving household inventions such as the washing machine and vacuum cleaner?
increased savings and decreased average consumer debt
O increased number of women who joined the temperance movement
increased popularity of new and exciting entertainment events such as movies
O increased ability of manufacturers to produce more products at lower costs

increased popularity of new and exciting entertainment events such as movies

Explanation:

As the entertainment industries developed, more people wanted to acquire free-time to consume the movies/tv shows provided in television. Most of the shows that were popular during this time targeted toward female audiences.

One of the things that they do to obtain this is by cutting the time that they need to finish their job. This is why time-saving household inventions selling really well during this time. (at the time, career options for women was very limited. So the majority of them were stay at home wives)

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.