Answer:
they joined to british forces because they were seeking liberty
Explanation:
Plant and animal kingdoms.
These are in both the systems.
From what I gathered from your question I think you are talking about the president of Nigeria and his name is Muhammadu Buhari.
One branch of government can check the other through the usage of "Checks and Balances", which states that no one branch can become to powerful, as the others have the right to suppress the other branch's power.
hope this helps