Answer:
Oil spills, is the right answer.
Explanation:
The discharge of a liquid petroleum hydrocarbon into the atmosphere, particularly the aquatic ecosystem, due to personal enterprise, and is a kind of pollution, is known as an oil spill. The term is basically used in the context to marine oil spills, where oil is discharged into the sea or coastal lagoons, but spills may likewise occur on the ground. Prior to the 20th century, the oil spill impacted marine oil exploration in the U.S.
We would still be owned by them.We would also have to work and serve for them,making the US not independent.
Since the North American continent is very diverse when it comes to physical geography, one of the main factors would be river flows and mountain chains affecting transportation routes within the continent, and oceans and mountain chains affecting rainfall that is vital for the crops.
You are correct :)
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