Answer:
it lasted between 1945-1979
so thats 34 years
Explanation:
American ships became targets of attack by 1917 because Americans continued to trade with the warring nations.
At that time, the american vowed that we adopt a non-interventionist policy during the war time. But when we continue to trade with warring nations, other nations viewed it as we supplying materials and supplies to one of the nations that involved in the war. This is why american ships became targets of attack.
Thomas Edison was a Nineteenth-century inventor who is associated with Menlo Park in New Jersey
In order to ensure Constantinople was a splendid city Constantine built magnificent structures in his city and turned it into a great capitol. He brought people of high rank who could help the city blossom in different spheres of life. Furthermore, for better protection high walls were erected, they surrounded the entire city.
increased urbanization which led to expansion