When america bought the middle territories from france.
Representative democracy.
The Romans elected representatives to represent them in the Roman senate.
The Gold Rush had affected a lot of indigenous people living in California, wherein indigenous people were pushed off their lands and were attacked by gold hunters or also known by the term "forty-niners". The term originated from the year that the gold rush had happened. After the gold rush, the population of California rose, and diseases, genocide and starvation had decreased.
The constitution says that the Judicial branch may not act on a law unless a state court brings it to the supreme court
Hope this helps! :)