How was the issue of slavery decided in the territories ceded by mexico

"The new states’ constitutions permitted slavery."

In 1846 and 1848, The cession of regions dissipated by Mexico are the regions that Mexico was compelled to capitulate to the United States to terminate the militant control of the nation among as an outgrowth of the Mexican-American conflict. This cession was formalized throughout the Treaty of Guadalupe Hidalgo, signaled in the center of the corresponding title on February 2, 1848 which permitted the continuation of slavery in Mexican territories.

This comes from the Declaration of Independence. It really is a summary of the outcome of the Magna Carta, the document in which King John agreed (a bit unwillingly) to get the consent of the nobility before imposing questionable taxes needed because King John fought unnecessary wars in the opinion of the barons. They were the ones who were going to fight the wars AND collect the taxes. Jefferson was merely restating the rights of those governed. As it turned out, he moved the Magna Carta into the American Constitution.