Since the days of Hernan Cortes, there has been a dream of a waterway to connect the North (Atlantic) and South (Pacific) Seas. Three options have been considered since von Humboldt revived the idea in the 19th century:
1) Tehuantepec Isthmus (considered first for an interoceanic canal, then for an interoceanic railway)
2) Up the San Juan River to Lake Nicaragua, and then down to the Pacific through locks and tunnels
3) The current Panama canal
There were numerous treaties and purchases made by various imperial powers (France, the United States etc) for the rights to said territory in order to construct a canal. For instance, 1) was included in the McLane-Ocampo Treaty 1859 in which Juarez agreed to let the USA have perpetual right of transit across the Isthmus.
What effects would an interoceanic canal (such as those mentioned (adding that I am aware that the current Panama canal fell within Colombia's borders)) have on the possible economy of a surviving Mexican empire?
1) Tehuantepec Isthmus (considered first for an interoceanic canal, then for an interoceanic railway)
2) Up the San Juan River to Lake Nicaragua, and then down to the Pacific through locks and tunnels
3) The current Panama canal
There were numerous treaties and purchases made by various imperial powers (France, the United States etc) for the rights to said territory in order to construct a canal. For instance, 1) was included in the McLane-Ocampo Treaty 1859 in which Juarez agreed to let the USA have perpetual right of transit across the Isthmus.
What effects would an interoceanic canal (such as those mentioned (adding that I am aware that the current Panama canal fell within Colombia's borders)) have on the possible economy of a surviving Mexican empire?