This document provides a brief overview of the history of the YMCA movement from its founding in 1844 to recent initiatives. It describes how George Williams created the first YMCA in London to support young men facing challenges, and how the organization later expanded globally and diversified its activities. Key events mentioned include the first World Conference in 1855 that established the World Alliance and Paris Basis, and more recent movement reviews in the 1970s and 1990s that resulted in documents like the Kampala Principles and Challenge 21 to update the mission for new generations. The goal is to help change agents understand the YMCA's roots and evolution while empowering further exploration of its rich historical journey.