Base on the explanation below I guess it best match D. British failed to pay for the land they purchased
Explanation:
The French and Indian war led to massive debt for the British crown towards the Bank of England. The various acts (Stamp Act, Tea Act and Townsend Act) were aimed at paying back those debts and this is how tensions were triggered.
The Vietnam War was a highly contentious period of time for the US, as it divided the nation in two and raised a counter culture that fought against government intervention. Many believed that the United States had no business in this conflict.
