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.
<span>Supreme Court found Northern Securities had violated the Sherman Antitrust act and ordered the trust to be broken up</span>
Thaddeus Stevens in the house and Charles sumner in the senate