Mexico
Mexico was the most recent inquiry.
The Wilmot Proviso proposal was to prevent the introduction of slavery in any territory acquired from Mexico
There are only two of them: the country of Mexico - the original - and New Mexico, a territory acquired by the US from Mexico.
After the Compromise of 1850 the United States acquired both the New Mexico Territory and Utah Territory as parts of its territory. The Mexico and the US border was also agreed on the south.
David Wilmot
slavery in the territory acquired from Mexico
That all the territory acquired by the USA from Mexico should be free soil.
Any state that is not California, Nevada, Utah, Arizona, New Mexico, Texas, Wyoming, Colorado, Oklahoma or Kansas.
True.
Wilmot Proviso
Slavery would not be allowed in any territory acquired from the Republic of Mexico.