Dutch is the official language in the Netherlands. It is spoken by 90% of the population. Around 350,000 people (2.2%) of the population speak Frisian as their first language. These people mainly live in the northern province of Friesland, where Frisian is the official language. Turkish and Arabic are spoken in the Netherlands each by just over 0.6% of the population
Continuing to hold on to someone's hand is mostly considered inappropriate.
Interesting fact: According to urbandictionary.com a Dutch handshake - is Kicking someone in the chest, especially in an otherwise nonviolent context such as a sports event like the World Cup final match between the Netherlands and Spain in 2010.
De Jong should have been red carded for the Dutch handshake he gave Alonso in the final. What scum.