The Concentration was a coalition of Dutch liberal parties

Liberalism in the Netherlands

This article gives an overview of liberalism in the Netherlands. It is limited to liberal parties with substantial support, mainly proved by having had a representation in parliament.-Background:...

 between 1901 and 1918. The Vrijzinnig Democratische Bond, Liberale Unie and the Bond Vrije Liberalen participated. The main issue which united these parties was universal suffrage

Universal suffrage

Universal suffrage consists of the extension of the right to vote to adult citizens as a whole, though it may also mean extending said right to minors and non-citizens...

 and their opposition to equal financing for religious schools. The Concentration governed between 1905 and 1908, led by the Theo de Meester

Theo de Meester

Theodoor Herman "Theo" de Meester was Prime Minister of the Netherlands and Finance Minister from 1905 to 1908....

 with support of the social-democratic SDAP and 1913 and 1918 led by Pieter Cort van der Linden

Pieter Cort van der Linden

Pieter Wilhelm Adriaan Cort van der Linden was a Dutch politician. He served as prime minister of the Netherlands between 1913 and 1918....

 in an extra-parliamentary cabinet. In 1921 two of the component parties, the League of Free Liberals and the Liberal Union form the Liberal State Party, the Freedom League

Liberal State Party

The Liberal State Party, "the Freedom League" , was a Dutch conservative liberal political party from 1921 to 1948...

.