Why is "World War II United States Merchant Navy" trending?

Wikipedia Overview

World War II United States Merchant Navy was the largest civilian Navy in the world, which operated during World War II. With the United States fighting a world war in all the world oceans, the demand for cargo and fuel was very high. Cargo and fuel was needed around the world for the United States Navy, United States Army, United States Marine Corps, United States Army Air Forces, United States Coast Guard and the support of the allied nations of the United States. American steamship companies chartered ships from the Maritime Commission and War Shipping Administration to meet the demand. Many United States Merchant Marine ships were newly built in the Emergency Shipbuilding Program, other ships were older World War I ships that were put back in service, or private ships acquired under Emergency war requisitions. The Merchant Navy operated in the Pacific War and European war. Over 200 US Merchant ships took part in the D-day Normandy landings. To make a Normandy breakwater Harbor, called Mulberry harbour, 33 merchant ships were sunk 1,000 yards from shore. Some of the ghosts merchant ships used were damaged and others were deemed too old.