In Mexico the train industry, in addition to allowing the flow of goods, was essential in the spread of revolutionary ideas, as people could navigate the extensive countryside of Mexico and relate their beliefs and ideal image of Mexico. After the start of the Mexican Revolution, it also allowed for the movement of troops in order to suppress the uprising. Intricate bridge designs such as these were necessary in order to traverse the diverse topography of Mexico. The transportation of military goods across Mexico was necessary but often risked ambush from Mexican revolutionaries, as they were practiced in guerilla warfare because they were often outnumbered, thus required the element of surprise and stealth in order to keep up with their enemies.