The first one is the answer ;)
Yeah I think you're correct there
Because the trade with China was an isolationist nation which saw Western ideas as problematic for the current state of their nation, because Western nations did not possess anything of value to exchange, they began to look for different methods, among them the sale of drugs and addictives to the population. By 1839, opium stocked by the United States, the United Kingdom, and France had reached the isolated peasants and the workers spent 2/3 of their profits to maintain their addiction.
Before this, the Chinese emperor banned opium and expelled the British merchants, who upon arriving in London complained to the British government, which decided to attack China with its powerful fleet to force it to buy opium cultivated in British India.
A.) No, Mexico did not attack the United States
B.) No, the war only caused more debt they would not of wanted to join over money.
C.) Yes, they retrieved a letter and it revealed that the country sending the letter was trying to find ways to make us join. In the early 1900s we were attempting to return to our safe isolationist country-- but world war 1 didnt allow for this to stay.