What was decided by the Treaty of Guadalupe Hidalgo?Que se determino el tratado de Guadalupe Hidalgo?

If I understand this question correctly, you are asking
what was decided by the Treaty of Guadalupe Hidalgo.  The answer is that this treaty
determined the new boundaries between the United States and Mexico after the
Mexican-American War of 1846-48.

In the Treaty of Guadalupe
Hidalgo, Mexico was forced to give up almost half of the entire territory that it had
held before the war.  In return, the US paid Mexico a sum of $15 million.  The treaty
also guaranteed that the people who lived in the territory taken by the US would have
their property rights respected and would have political rights in the US.  This
condition of the treaty was not widely obeyed.

The short
answer, then, is that the Treaty of Guadalupe Hidalgo redrew the borders between Mexico
and the US, giving the US a huge amount of land in what is now the Southwest of the
country.