They both have rivers and land
The basic reason for which the United States supported the Panamanian rebels was the US's desire to build a canal across the Isthmus of Panama.
The development of agriculture led to increased trade as agricultural areas traded surplus crops for other goods. Government officials regulated trade and exchange rates—over time, government's role would expand with trade. Agriculture also led to an increase in cities; this also necessitated more governance. Scribes kept records of how much of each crop was harvested.
The Aztecs ruled much of Mexico
The idea that D. Labor unions will make life better for workers was not expressed by Karl Marx in Das Kapital or the Communist Manifesto, since labor unions would have taken power away from the state