Similarities:
Both Great Britain and Germany have governments that are democratic, meaning that the people have a say in who runs the country. They both hold elections to choose leaders, such as the Prime Minister in Great Britain and the Chancellor in Germany. Additionally, both countries have parliaments that make laws and help to run the government.
Differences:
In Great Britain, the government has a monarchy, which means there is a king or queen, even though their powers are mostly ceremonial. In contrast, Germany does not have a monarchy and is a republic, where the president is more symbolic and the Chancellor holds most of the power. Furthermore, Great Britain has a system known as "Common Law," while Germany follows a civil law system, which is based more on written laws.