History, like any other subject, is something that must be considered as a whole. Looking at a single part of history, be it a single day or a single century, and not looking into the past will cause confusion and misinterpretation. To understand the past and interpret it as clearly as possible, historians must look at the events leading up to the event being studied. In the case of the Anglo-Saxon occupation of post-Roman Britain, we need to understand how Anglo-Saxon society emerged. To do this it is necessary to look at the history of pre-Roman Britain and the Roman occupation, which eventually led to the Anglo-Saxon presence. Anglo-Saxon Britain was founded with the end of Roman influence on what is now known as the United Kingdom. The history of Roman occupation is important for understanding how the foundation of Anglo-Saxon society developed. As with any topic that attempts to interpret ancient data, a certain amount of errors are to be expected when dealing with history that is over a century old. thousands of years old and has few primary data sources. The primary sources came from the Christian historians Bede and Gildas who date back to the 5th and 6th centuries AD Other information was gleaned from government documents, evidence discovered by archaeologists and historians of later centuries. Brittian is an island, which is due to its isolation from the rest of the world for centuries. Britain before the Romans was Celtic in nature and had links to France, which was called Gaul at the time. There is also evidence that Britain had Germanic links in terms of trade. The island is described as "...". It is thought that before the introduction of Latin by the Romans four main languages ​​were spoken, British, English... middle of the paper... that story we have a country that suddenly has sophisticated towns and cities, an understanding of armed forces and relationships with Germanic tribes, the Gauls, and other places that were once under Roman control. Without Roman history, Britain cannot be understood in terms of how it developed and why some areas of Britain are more inhabited than others. Anglo-Saxon Britain is understood by knowing and understanding the Roman history that precedes it. Roman history is important as it teaches historians about the origins of the practices, beliefs and traditions of the Anglo-Saxon people. In conclusion, history is not just an event that can be understood. To understand the story you have to understand what happened before. In the case of the Anglo-Saxons, the Romans came before them, so it is important to learn and understand Romano-British history.