AI overview
I don't have enough context to provide an accurate overview of what "290" refers to. The context provided only indicates it's a year, but without additional information about what specific event, object, or topic "290" relates to, I cannot write a reliable 2-sentence explanation for a general reader.
AI-generated from the Wikipedia summary — may contain errors.
Article
Litus Saxonicum (England)
Year 290 (CCXC) was a common year starting on Wednesday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Valerius and Valerius (or, less frequently, year 1043 Ab urbe condita). The denomination 290 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.