Here is a milestones timeline of the European Union established in 1993. In 2007, Bulgaria and Romania became EU members. In this timeline, significant events from 2003 to 2020 are listed, helping people know what the EU did in the past quickly. A timeline always is used in project management and used to record historical events. A timeline is an ordered listing of occurrences in the order in which they happened. Besides, a timeline can be used to make a plan. Also, Timelines are important to any project. They not only help arrange the work that needs to be completed, but they also keep people responsible for doing it. If you are interested in finding out the history, you can make your timeline.