Simplify the following text for a Grade 7 native English-speaking person.
Original: The Romans landed at Poole during their conquest of Britain in the 1st century and took over an Iron Age settlement at Hamworthy , an area just west of the modern town center . In Anglo-Saxon times , Poole was included in the Kingdom of Wessex .
Simplified: When the Romans invaded Britain in the 1st century , they landed in Poole .