Why did the Berlin wall became known as Checkpoint Charile.

The name Charlie came from the letter C in the NATO phonetic alphabet; similarly for other Allied checkpoints on the Autobahn from the West: Checkpoint Alpha at Helmstedt and its counterpart Checkpoint Bravo at Dreilinden, Wannsee in the south-west corner of Berlin.

Explanation:

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b, public works good luck

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.