You only need to be in possession of a dutch passport be dutch, or "nederlands"

you are considered a Dutchman "nederlander" if you are also born in the Netherlands.

this is one giant lie. a pasport that says dutch means nothing, a guy for example a muslim with a dutch pasport is not dutch. you have to be dutch by blood to be a dutchman.

if your dutch by blood you dont have to speak dutch to be dutch

'from English to Dutch' is

'van Engels naar Nederlands' in dutch

Dutch people or in the language that they speak over there (Dutch) Nederlanders

In Holland, the Dutch adjective is "Holland's." There is no true adjective for Holland in English. The closest adjective in English is "Dutch," however, that not only applies to Holland but to all of the Netherlands. It is also common to hear "of or from Holland" in English.

The Dutch saw them as trading partners.

The Dutch were not interested in converting them.