Give all raw materials to there country. Let them make finished or manufacturing goods, them sell them back to the colonies.
Answer:
the United States Constitution
Rail cars, trucks, tanker vessels, and through pipelines. all depends how much you are transporting
The Hundred Days Offensive Jul–Nov 1918 was the costliest
The Ludendorff offensive other wise known as the spring offensive was a German offensive on the Western Front intended to win the war before the American troops that had begun arriving in France could fully deploy.
I'm unsure of how far they advanced
Kaiserschlacht was the last German offensive and was a series of German attacks along the Western Front.
