False. The Articles of Confederation led to a weak central government.
The answer is 'Railroads'
The Industrial Revolution in England lead to the development of trains and fast travel.
The United States quickly adopted the technology and brought in English businessmen and engineers to develop railroads in it's sprawling western states.
Railroads were integral in the early years in to cement newly acquired states under the control of the Federal government.
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It would be all of these. During world war 2 it is the United States that supplied almost everything in the allied war effort. Also the United States take longer route and also a hard campaign to combat the German U-boat for supremacy and stable supply route for the allied forces.
Answer: Diocletian split the empire into east and west. 6. During the IMPERIAL CRISIS Roman generals warred over succession. These conflicts drew soldiers away from the frontier and made the empire vulnerable to INVASION. Hope this helps... Stay safe and have a great day...