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.
Ironically, the U-boat was originally intended as a defensive craft. It was only mobilized offensively in response to the British blockade. The first expression of the German U-boat's offensive power was the sinking of the Lusitania in May, 1915. The Germans had placed numerous newspaper ads warning Americans not to travel aboard the Lusitania, which was carrying munitions but masquerading as an ocean liner.