Add the date for the bridge,

The allotments area was reclaimed first

Remove chronology from constant river area

Remove name - it was clutter

Minor relation tweaks for river change

Try separate multipolygon relations

Tidy relation entries

Make inner of later island

Make lost land be inner to 1809

Change reclaimed land to be inner

Tidy relation entries

Add all river parts to Chronology relation

Separate outers

Change chronology order?

More expermentation

Add chronology

Set outer as every area ever as river

Try edge as inner

Try distinct outer areas that share an edge

AD not BC