Simplify the following text for a Grade 6 native English-speaking person.
Original: The Asuka period , was a period in the history of Japan lasting from 538 to 710 ( or 592-645 ) , although its beginning could be said to overlap with the preceding Kofun period .
Simplified: The Asuka period was a time in the history of Japan which lasted from around 538 through about 710 . There is some overlap with the Kofun period which came before .