sentences:  Following the end of World War II Queen Wilhelmina ordered the formation of a cabinet of national unity to reorganize the state and make preparations for new elections with Drees appointment as Deputy Prime Minister and Minister of Social Affairs in the Cabinet Schermerhorn–Drees, taking office on 25 June 1945.On 9 February 1946 the Social Democratic Workers' Party (SDAP), the Free-thinking Democratic League (VDB) and the Christian Democratic Union (CDU) choose to merge to form the Labour Party (PvdA).Drees was one of the co-founders and became the first Leader of the Labour Party.