They used interchangeable parts. This made the mass production possible and caused it to happen.
B. John Smith was the first
Answer:
Because citizens give the power to be government, and they need information in order to vote and participate wisely...
Explanation:
I'm not to sure if I'm super right but I hope this helps a bit my friend
Depending on what you mean, it changed when the north saw that slavery was not just, and started goin on the attack on it. Which lead to the whole civil war of confederates vs the union
