The significance was that these allowed goods to be transported much faster than by horse. Canals allowed for things to be imported and exported much more easily.
Answer:
Diplomacy
Explanation:
Why u ask?! well you see USA had missiles in Turkey and Soviet Union Saw this as a threat so they put missiles in Cuba, Kennedy the President at the time knew that This would be a disaster and asked Russia to remove the nukes and Russia declined then asked USA to remove thier nukes from Turkey they also declined and after a series of boring stuff happening they bother decided to remove the nukes before the world ends :)
Michigan entered as a free state as it was one of the most north states of the U.S and still is. That meant it was filled of people that had a bad tone towards slavery. Florida is one of the most southern states and was filled with cotton farms in northern Florida ( South Florida was uninhabited by Americans cause there were marches and alligators I;e Everglades) Iowa was also a free state. Iowa was near Michigan and also had a population that disliked slavery.