The Berlin Wall was built to

The Berlin Wall was built by the German Democratic Republic during the Cold War to prevent its population from escaping Soviet-controlled East Berlin to West Berlin, which was controlled by the major Western Allies. It divided the city of Berlin into two physically and ideologically contrasting zones.

Explanation:

To prevent its population from escaping soviet-controlled east Berlin to west berlin, which was controlled by the major western allies. it divided the city of Berlin into two physically and ideologically contrasting zones.

the american rail road was the most influential and useful transportation system developed in the 1800's with steam locomotives and in the very late 1800's and early 1900's diesel electric locomotives being used to transport goods and people around the newly expanded united states!

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