Napoleon's Continental System was designed to destroy the British economy completely by blocking any trades from allies to Britain and even the neutral countries. Britian counter blocked and resulted in the Anglo-American War of 1812.
"The cause of" would be the answer
<span>The Annexation of Texas, the Mexican-American War, and the Treaty of Guadalupe-Hidalgo, 1845–1848 </span>
During his tenure, U.S. President James K. Polk oversaw the greatest territorial expansion of the United States to date. Polk accomplished this through the annexation of Texas in 1845, the negotiation of the Oregon Treaty with Great Britain in 1846, and the conclusion of the Mexican-American War in 1848, which ended with the signing and ratification of the Treaty of Guadalupe-Hidalgo in 1848.
Oh well then It'd be conquest or in other words, force
This is 2. Vietnamese New Year or Têt. Têt signified the first day of the lunar new year and is celebrated with numerous festivities, firecrackers, and the traditional red envelope. I'm slightly offended by this question; does every think Vietnam is that miserable? Feels bad to be Vietnamese...