What was the great disaster of 1916 in the Netherlands?

Netherlands I guessed it would be a flood

Ulrich, citizens of the USA assume many things. It shows up regularly in this quiz.

Hadn't heard of this. Imagine going to bed and wakibg up to your house and family being swept away in a flood. Devastating. 😢

I'm assuming "dollars" implies USD.. Because lots of countries call their money "dollars". Canada and Australia for example.