The answer is impeachment
They started domesticating wheat. This wasn't their main feat however since they also started herding sheep and domesticating goats. These two enabled them to stop moving around like nomads and make a real civilization in the area which resulted in what is now known as history.
I think I answered this earlier, so I copied my answer from earlier:
The Hawley-Smoot raised tariffs on many imported goods. Many American trading partners retaliated, making the Great Depression worst then it already was.
Kingdom of Israel in the north and the Kingdom of Judah was in the south.