History of Oceania

What was an affect of the new submarine in World War 1?

Unrestricted Submarine Warfare:

- The introduction of submarines during World War I led to the practice of unrestricted submarine warfare, particularly by Germany. Unrestricted submarine warfare involved sinking merchant and passenger ships without warning, even those belonging to neutral countries.

- This practice caused significant disruption to international trade and travel, increased civilian casualties, and heightened tensions between the United States and Germany, contributing to the eventual entry of the United States into the war.