Transportation - culutres brought together. Mining Attracted foreign investment by granting subsoil AND topsoil rights. Lower tax rates on minerals. Modern machinery and extracting processes. 1890 - El Boleo copper mine becomes richest in North America.
Cyanide process revolutionizes gold and silver mining.
Dominate prtroleum in early 20th century - make Mexico one of the largest oil producers in the world. Monterrey becomes the industrial capital of Mexico. Opens country to new ideas. For a third of a century, no problems between liberals and conservatives, and no major civil wars. Peace also came through brute force.