What are the main customs of Germany?
In Germany one of the customs is Oktoberfest. Oktoberfest happens every year and thousands of people come from other parts of the world to participate.
The German Customs Union was started by Prussia in 1818-1834. At that time Germany consisted of 39 sovereign states, each able to charge customs duties. Goods travelling from, say Berlin to Cologne had to pass through at least two other states, which both levied transit duties. The case for creating a customs unions was very clear and very strong.