England

Context
Britain has been intermittently inhabited by members of the Homo genus for hundreds of thousands of years and by Homo sapiens for tens of thousands of years. DNA analysis has shown that modern humans arrived in Britain at least 25,000 years ago, before the commencement of the last Ice Age. This evidence also shows that, as the next (and last) Ice Age encroached from the north, the firsthumans living in Britain then retreated to Southern Europe when much of the continental land mass became covered with ice or frozen as tundra.
Because so much of the Earth's water was trapped in ice, the sea's level was about 127 m (417 ft.) lower than it is today. Consequently, Britain was joined to Ireland by an exposed "land bridge," making transit between those regions more practical as boatswere no longer needed for the journey. The lowered sea level also joined Britain to Continental Europe by an area of dry land, known today as Doggerland. After the end of the last Ice Age (around 9500 BC), Ireland once again became separated from Britain due to the rising tides. Later (around 6500 BC), Britain was also cut off from the rest of Europe by the same phenomenon, albeit at a muchhigher level.
As shown by archaeology, Homo sapiens had reoccupied Britain by approximately 12,000 BC, as the climate became warmer and more hospitable. By around 4000 BC, the island was populated by people with a Neolithic culture.[2] However, none of the pre-Roman inhabitants of Britain had any known, surviving, written language. Because no literature of pre-Roman Britain has survived, its history,culture and way of life are known mainly through archaeological finds. Though the main evidence for the period is archaeological, there is a growing amount of genetic evidence, which continues to change. There is also a small amount of linguistic evidence, from river and hill names, which is covered in the articles on the Pre-Celtic and Celtic cultures.
The first significant written record ofBritain and its inhabitants was made by the Greek navigator Pytheas, who explored the coastal region of Britain around 325 BC. However, there may be some additional information on Britain in the "Ora Maritima," a text which is now lost but which is incorporated in the writing of the later author Avienus. Archeological evidence demonstrates that ancient Britons were involved in extensive maritimetrade and cultural links with the rest of Europe from the Neolithic onwards, especially by exporting tin that was in abundant supply. Julius Caesar also wrote of Britain in about 50 BC after his two military expeditions to the island in 55 and 54 BC. The 54 invasion was probably an attempt to conquer at least the southeast of Britain but failed. [3]
Located at the fringes of Europe, Britain receivedEuropean technological and cultural achievements much later than Southern Europe and the Mediterranean region did during prehistory. The story of ancient Britain is traditionally seen as one of successive waves of invasion from the continent, with them came different cultures and technologies. More recent archaeological theories have questioned this migrationist interpretation and argue for a morecomplex relationship between Britain and the Continent. Many of the changes in British society demonstrated in the archaeological record are now suggested to be the effects of the native inhabitants adopting foreign customs rather than being subsumed by an invading population.
[edit] The Palaeolithic
Palaeolithic (Old Stone Age) Britain is the period of the earliest known occupation of Britainby humans. This huge period saw many changes in the environment, encompassing several glacial and interglacial episodes greatly affecting human settlement in the region. Providing dating for this distant period is difficult and contentious. The inhabitants of the region at this time were bands of hunter-gatherers who roamed Northern Europe following herds of animals, or who supported themselves...