Why did Columbus leave some of his men on Hispaniola?

Columbus left some of his men on Hispaniola to establish a foothold for further exploration and to secure a Spanish presence in the New World. He aimed to set up a colony that could support future expeditions and facilitate trade, particularly in gold and other resources. Additionally, leaving a small group allowed for contact and communication with the indigenous Taino people, which he hoped would help in gathering information and resources for Spain.