Loose the land for other things and then starts more land and room for slavery
Parthenon I did the research for this
The Mexican-American War, that happened between 1846 and 1848 was a result of the dispute over the territory of Texas, which back then was called the Republic of Texas, and the Mexican President still considered Texas as Mexico's province.
D The prince was a great supporter of Chinese culture and Buddhism, spreading both during his reign by encouraging closer ties with China, introducing principles of Chinese government, creating a constitution