Answer:
The phrase implies a comparison between two natural materials as different as water and fire, referring to the fact that this difference is similar to the differences between the different British colonies in America.
Thus, for example, the New England colonies were clearly influenced by Puritanism and political conservatism, while others such as Maryland had a clear Catholic influence and a more open mind regarding other religions, cultures and nationalities. Also, while in the north some manufactured goods such as ships were produced, in the south of the country the main industry was agriculture.
German
The term "Hessians" refers to the approximately 30,000 German troops hired by the British to help fight during the American Revolution. They were principally drawn from the German state of Hesse-Cassel, although soldiers from other German states also saw action in America.
The south was technically fighting a defensive war, they had more time to prepare so really any of these answers could be right, but id have to go with they had either more money or more effective military commanders