“The Apache tribe knows how to utilize cactus for food, drink, and fiber, improving Settler speed and hit points.”—In-game description
Apache Cactus Use is a technology in Age of Empires III: The WarChiefs that can be researched at a Trading Post built on an Apache settlement. Once researched, it increases the hit points and speed of villagers by 15%.
Villager travel time does have a small effect on the economy of European Mills, Plantations, and all civilizations hunts (except the Japanese) and fishing. It can loosely be considered around a 5% gather rate increase for regular villager-type units, while Settler Wagons gain about a 6% increase and Coureur des Bois can use it along with the Northwest Passage (+20% more speed) card to gain around a 11-12% rate boost.