Acquiring Dutch citizenship through an option
Are you an immigrant or the child of an immigrant? And do you not currently hold Dutch citizenship? If so, it's possible to acquire Dutch citizenship through option. You will be given the same rights and duties as citizens of The Netherlands. If you live in the municipality of Leiden you can file a request with the municipality.
If you wish to become a Dutch citizen through option you can find explanations, exceptions and examples on the website of the Immigration en Naturalisation Service (IND).