Answer:
Transporting Cargo or/and People.
Explanation:
The fact that the government is divided into three branches is known as the "division of power" - the power is distributed to avoid power abuse, so that no instance has unlimited power.
The fact that the three branches are overlapping is known as "checks and balances" - the branches check the other ones (whether their function is lawful) and balance each other.
D?
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