The US economy started booming in the 1920s because WWI was just ended/coming to a close and all of the money that was spent on war supplies made companies and workers richer as well the war debt and damage of our alies needing supplies that we gave giving us even more money and prosperity.
It made things faster, simpler, and better.
The creation of the German Confederation in 1815 was largely in
reaction to the growing sense of German nationalism, which had not
existed in Europe prior to the 19th century. While strains of
nationalism certainly existed before the turn of the century, it was
France's conquest of the German lands in the first decade of the 19th
century that first fully aroused German nationalists into proposing a
unified, German state. Indeed, J.G. Fichte's Addresses to the German Nation, given in Berlin in 1808, called on Germans to unite under their common language and traditions.
Perhaps
no other statesman was in such a fine position to make this dream a
reality as the Chancellor of Prussia during the mid-19th century, Otto von Bismarck.
Bismarck was a fervent German nationalist who wanted a German nation,
but specifically one dominated by his Prussia. As a result, once
appointed, Chancellor Bismarck set out to strengthen and improve the
Prussian army and gain international allies that would help Prussia on
its way to unifying Germany.
The Medici family ruled the city of Florence throughout the Renaissance. They had a major influence on the growth of the Italian Renaissance through their patronage of the arts and humanism. The Medici family were wool merchants and bankers. Both businesses were very profitable and the family became extremely wealthy.
