They had a trade dispute over Tariffs. This correct
The answer is A
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Iran Contra Affair would be your answer
D. Great Britain.
Source: My World History Textbook
"Great Britain, which long opposed construction of the canal for fear that it might fall into enemy hands, benefited more than any other nation... Instead of making Egypt powerful and independent, the Suez Canal provided the excuse for a British invasion and occupation of that country."