2,500,000 bc, 10,000 bc, 8,000 bc, 3,500 bc, 3,200 bc.
The harnessing of electricity radically transformed American business since this meant that power from electricity could power lightbulbs, which were far more effective than candles and other sources, and that electricity could be used to power machines that increased efficiency.
The new state constitutions created state-run and funded institutions like orphanages, prisons, and homes for the mentally challenged. This expanded public responsibilities. The constitutions also established a state-funded free public education system which were aimed at ensuring access to education for all
