1 May

Daimler Motors Corporation in Stuttgart and the Rheinische Automobil- und Motorenfabrik Benz in Mannheim form a syndicate that leads to a merger of the two companies two years later.
[Overesch/Saal, p. 224]

4 May

The main focus during the Reichstag elections is on the strict policy of stabilization by Marx’s bourgeois government and on the findings of the committee of experts on the reparations problem. This works to the advantage of the opposition parties and to the disadvantage of the governing parties. The DNVP, in particular, makes great gains and, together with the Rural League, forms the largest parliamentary group in the Reichstag. As it is regarded as impossible - in light of the important reparations negotiations - for the DNVP to be part of the government, a bourgeois minority government is once again formed under Marx.
[Kolb, p. 338-339]

19 May

The American President Calvin Coolidge agrees to loan 100 million dollars to Germany.
[Overesch/Saal, p. 226]