German submarines, or "U-boats", did not CONTROL the shipping lanes, but they were able to intercept and sink a large number of cargo vessels sailing between North America and Europe.
Wolf packs were a strategy German U-boats used to attack allied shipping
The nickname of German submarines during World War I was "U-boats," which stands for "Unterseeboot," meaning "undersea boat" in German. These submarines played a significant role in naval warfare, employing tactics such as unrestricted submarine warfare to disrupt Allied shipping. U-boats became notorious for their effectiveness in sinking merchant and military vessels. The term has since become synonymous with German submarines in both World Wars.
America was not directly attacked by Europeans during WW II, only by the Japanese (at Pearl Harbor) however the German navy did attack American shipping.
Any port around the British Isles was a good hunting ground. The British Isles are ISLANDS. Anywhere vessels enter those ISLANDS was "shipping traffic", or "shipping lanes"; those were always good hunting areas.
Curacao was important as an oil terminal for the allies during WW2. Being a colony of the Netherlands it was important to prevent its use by German shipping after the Netherlands was invaded. Many oil tankers destined for Britain were filled there.
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Yes, contact lenses can freeze during shipping in cold temperatures. To prevent this, it is recommended to use expedited shipping methods during colder months and to ensure that the package is insulated with materials such as bubble wrap or thermal packaging. Additionally, contacting the shipping carrier to request special handling for temperature-sensitive items can help prevent freezing.
The German guards were protecting the pope during the war
Fill the container its in with cushioning
The U.S. implemented the convoy system during World War II to prevent huge shipping losses in the Atlantic. This method involved grouping merchant ships together and providing them with naval escorts to protect against submarine attacks, particularly from German U-boats. The strategy significantly improved the safety of transatlantic shipping and reduced the number of vessels lost to enemy action.