name 3 historical events that helped establish the territorial boundaries of present day of new mexico

1. The Adams-Onis Treaty

2. The independence of Mexico from Spain and the Treaty of Limits.

3. The Treaty of Guadalupe-Hidalgo.

b.europe i believe because north america has 3 countries in a way and with all the stuff with illegal immagrants from mexico or whatever so i would say europe.

.elections are held to determine who serves in congress.