Infrastructure and Industrialization
The government began printing tremendous amounts of currency to pay reparations; this caused staggering inflation that destroyed middle-class savings. However, economic expansion resumed after mid-decade, aided by U.S. loans. It was then that culture blossomed especially.
The heyday of Berlin began in the mid-1920s. It became the most industrialized city of the continent. Tempelhof Airport was opened in 1923 and a start was made on S-Bahn electrification from 1924 onwards. Berlin was also the second biggest inland harbor of Germany; all of this infrastructure was needed to transport and feed the over 4 million Berliners throughout the 1920s.
Read more about this topic: 1920s Berlin