Question

4) who bull a
How were tanks built ​

Answer 1

Answer:

tanks are built in a specified armory industry.

Answer 2

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The first official photograph taken of a tank going into action, at the Battle of Flers-Courcelette on 15 September 1916. ... This was the first to use a fully rotating turret that contained the tank's main armament - the basis of tank design ever since. Over 3,000 of these machines were made by late 1918.