Answer:
The Siegfried Line or West Wall was a defense system during World War II over 630 kilometers, which consisted of more than 18,000 bunkers, tunnels and tank traps. It began at the height of the town of Cleveris, on the southern border with Holland, and ended at the height of Weil am Rhein on the border with Switzerland. The original objective of the line was propagandistic. In this way, the Germans saw the Siegfried Line as an assertion that Germany's foreign policy was defensive, and that they felt safe in the face of an imminent French invasion, as the Germans claimed.
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Explanation:
The answer is C. they connected the east and west
I believe the answer is D. <span>It united many different European kingdoms under a shared religious culture.
When roman empire falls, the fragments of what used to be territories formed their own kingdom/Governance.
and even though the kingdoms/governance are now separated, they still held into their religious Christian traditions as some sort of guidance in their life</span>
Using up resources that a lower population wouldnt typically do.