Simplify the following text for a Grade 10 native English-speaking person.
Original: Changes in land use , particularly the urban renewal of the Docklands area , caused the project to extend the line beyond Charing Cross to change considerably in the 1970s , 1980s and 1990s .
Simplified: Changes in land use , particularly the new areas in the Docklands area , caused the project to change considerably in the 1990s .