The correct answer is B, "sharecropping."
I think it’s c, but i’m not sure. hope this helps
I’m not sure if you mean technological and economic development or just products coming out kind of development.
Well I’m not gonna write out two paragraphs but some important tech and economical developments were:
The radio became widespread. It was welcomed by the public and by 1934 almost 60% of the US had radio access. Sports events, news, dramas and more were broadcasted through the radio.
Stock markets across the west developed negatively. On Black Tuesday, stock markets crashed, sending the world into the Great Depression.
Groups like the KKK and the White League were afraid of different ethnic groups like African Americans getting equal treatment from white people. Hope this helped :)