No Mexican War? Fifty-four forty or fight (sort of) a reality? Gran Colombia, alive and well? Independent Sonora and Chihuahua? What have you done, man? What have you done? Also, why is New Mexico called New Mexico? Wouldn't California or some variation thereupon be better suited?
Actually, Panama didnt gain its independence until 1904,73 years after the disolution of Gran Colombia. And its important to note that the US pretty much forced Colombia into allowing its independence, which it could not of done on its own, and in this map the USA is much less influencial in Central America than OTL, so Panama would never have gained independence or this map could be before 1903.