I believe the answer is A (correct me if i'm wrong please)
Trains from different rail lines could use each other’s tracks
Answer:
Primary tabs. The law of the land is the whole body of valid laws, statutory or otherwise, existing and in force in a country or jurisdiction at a particular date. Every valid statute is the “law of the land” with respect to its subject matter.
Explanation:
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They make swords shield for the king´s army