The telegram was supposed to be a secret between the countries and it had a plan to attack. But when the US got a hold of it the plan was no longer secret therefor the enemy did not get the attack they had planned
ANSWER:
The war resulted in an increased demand for iron and steel for things such as railroads, cannons, and ammunition, which led to the increase in mines opening up around the United States, especially in Michigan's Upper Peninsula. Hence, mining became a profitable industry after Civil War.
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Containment ship was the preventing to spread communism and brinkmanship was a foreign policy strategy and nuclear diplomacy