Subsequently the supporters of the Communist Party (KPD) and the Independent Social Democratic Party (USPD) declared a general strike in the Ruhr area.
Three months later, on April 6, 1917, the USPD was founded at a conference in Gotha, with Hugo Haase as the party's first chairman; the Spartakusbund also merged into the newly founded party, but retained relative autonomy.
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For instance, the Independent Social Democratic Party of Germany (USPD) and Independent Labour Party (ILP) were both seen as centrist because they oscillated between advocating reaching a socialist economy through reforms and advocating revolution.
Ebert of the SPD and Hugo Haase of the USPD agreed to the first four conditions and he received the appointment arriving in Berlin January 2, 1919.