It was the largest and longest battle of World War I, lasting 303 days. In 1916, Robert was only 10 years old when the Battle of Verdun was fought from February through December. Scurvy and rickets were both huge problems in sailors that were at sea for extended time and the addition of vitamin C, vitamin D, and calcium in their diets helped eradicate the problem. In 1906, in the year that Robert Mcknight was born, English biochemist Frederick Hopkins concluded that vitamins are essential to the human body and that a lack of vitamins caused scurvy and rickets. Refresh this page to see various historical events that occurred during Robert's lifetime.
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