Building techniques improved, iron became more common, and hydraulics were used to dig riverbeds deeper. So less floods happened that destroyed farms and endangered lives.
Answer:
A
Explanation:
The war of 1812 brought the states together to work toward a common cause.
Abraham lincoln
-believed slavery was a moral issue
Stephen douglas
-opposed kansas nebraska act
-introduced the kansas nebraska act
I only dont know the one of who wanted to allow slavery to continue but hope this helps
B. Believed in a stronger state government
