Final answer:
Germany's chancellor, separation of powers, and ceremonial head of state are unique features, shared characteristics include the prime minister as the executive head of government for both Germany and Britain.
Explanation:
Germany:
- The chancellor is the executive head of government.
- Separation of powers exists.
Both Germany and Britain:
- The prime minister is the executive head of government.
- A ceremonial head of state represents the country on national and international visits.
Britain:
- Separation of powers exists.
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