This document discusses the history and development of the Make tool. It describes how Make was created in 1977 at Bell Labs to automate the process of rebuilding programs and their dependencies. It explains that Make uses rules and dependencies defined in a Makefile to determine which targets need to be rebuilt, allowing developers to minimize unnecessary recompilation. The document also covers how Make popularized the concept of separating large programs into smaller components and files to improve manageability for teams of programmers.