Taxations without representation
Unfair military placement
Unfair military violence
Unfair government systems
...
The Declaration of Independence lists 27 in the List of Grievances.
I think that it's the third one if you're not to sure, I have a site that might help: https://www.britannica.com/event/Tokugawa-period
Answer:
Cup, ton, gram, ounce
*I believe*
The United States spent $15 million on the Louisiana Purchase (about $300 million in today's terms adjusted for inflation), which was an incredibly small sum.
