How did Germany prevent the United States from shipping goods to the other Allied countries?

Depending on what war you are talking about they used similar tactics.

Explanation:

In World War One the German Empire used unrestricted submarine warfare to stop any shipping goods between the US and the United States. Anti-Submarine equipment had not been developed so the chances of ramming a U-boat were not likely, nor destroying it when it surfaced.

In World War Two, Nazi Germany used U-boats as well to stop America's "lend-leasing" policy that gave resources and munitions to allied nations. As technology was more advance, submarine tactics were made to destroy American cargo ships efficiently without the loss of U-boats from allied escort ships. One infamous tactic, for example, was the "wolfpack tactic" in which multiple U-boats attacked multiple cargo ships in the dead of night after trailing them the whole day.

c)an idealized view of nature. hope this

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d