TL;DR -- New Spain covered more area than New France. And, it had land that the U.S. wanted later than did any other country. Finally, a look at the situation.
We finally are getting to New Spain after spending some time looking at New France. Doing these other areas does a couple of things, at least. For one, New England dealt with others who were European and who were over here but outside of New England. It will be good to get a closer view of the events and activities where we can 'flesh' out the situation; this type of work makes the study of history to be more human oriented.
The other thing is that the areas involved outside of New England were much broader in scope which we saw with the Louisiana Purchase. We backed into this study through looking at families that had gone west from both the northern and the southern parts (Virginia and surrounds) of New England. As we were getting familiar with details, it became obvious that we needed to stop and acquaint ourselves with the other colonialist's views. Jefferson did the Louisiana deal with New France, but the area had been under New Spain, too.
Let's use Wikipedia. There are several maps on the New Spain page, but we like this one for several reasons. It shows the total scope of New Spain. The darker blue region is the original coverage. There is a medium blue region that New Spain got from New France.
|New Spain, colored in blue|
|Coronado and his scouts|
|New Spain, 1819|
Remarks: Modified: 02/27/2021