Simplify the following text for a Grade 10 native English-speaking person.
Original: In Britannia , as in other provinces , the Romans constructed a network of paved trunk roads ( surfaced highways ) during their nearly four centuries of occupation ( 43 -- 410 AD ) .
Simplified: In Britain , as in other provinces , the Romans constructed a comprehensive network of paved trunk roads ( i.e. surfaced highways ) during their nearly four centuries of occupation ( 43 - 410 AD ) .