Mexico did not inherit territory from Spain; Mexico simply took it from Spain. The Spanish General, Agosto Iturbide, switched sides and became the ruler of Mexico. Its southern border began at the line between Panama and Costa Rica. The northern border fell roughly along the borders of the following states of the United States: California, Nevada, Utah, Colorado, New Mexico, and Texas.
During the Mexican-American War (1846-1848) Mexico lost present-day California, Nevada, Utah and parts of Colorado as well as most of northern New Mexico and Arizona. Also at the end of the war Mexico was forced to cease any attempt on reclaiming Texas, which included present-day Texas, as well as parts of Oklahoma, Kansas and Wyoming. This is also known as the Mexican Cession (1848).
Spain
It was a colony of Spain, but Mexico never was part of Spain's territory.
It is of the traits and traditions inherited from Spain when it conquered Mexico (1521 - 1821).
Spain did.
New Spain
It also became independent from Spain, as it was considered a territory of Mexico.
Yes, in fact Mexico gained it's independence from Spain on September 16, 1810
A territory of the new nation.
Yes. From 1521 until 1821, Mexico became an overseas territory of Spain.
A territory of the new, independent country.
At the Fall of Tenochtitlan, on August 13, 1521 Mexico became an overseas territory of the Spanish Empire.
after mexico gained independence from spain in 1821, it opened its borders to american traders, whom spain had kept away.