Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Droogmakerij de Beemster (Beemster Polder)' has mentioned 'Sea' in the following places:
Occurrence Sentence Text Source
In the period 1150-1250 peat-digging by people, and storm floods, enlarged that small river into an inland sea, a lake in open connection with the Zuiderzee.
In the earlier days of the polder, farmers occupied its lands for growing the crops necessary for long sea journeys by the VOC to the East Indies.