Rich in vitamin K, vitamin A and vitamin C along with other vital nutrients, the health benefits of kale include detoxification, heart support, cancer prevention and a number of others covered in this article. Health Benefits of Kale in History.
A U-boat is a type of submarine invented by the Germans for use in World War I and II. The initial U in U-boat stands for unterseeboot, or undersea boat in English. Holland housed a Submarine Development Bureau in 1922 that was made to look like a regular shipbuilding company.
The Constantinople Flotilla was established in May 1915 and operated U-boats in the Black Sea. Bulgaria joined the campaign in May 1916, when the German submarine UB-8 was commissioned by the Bulgarian Navy as Podvodnik. In three years of operation, the Flotilla sank ships totalling 117,093 GRT.