People with darker skin colors require more exposure time. Another point to remember is that this natural method does not work equally well at all latitudes and seasons, or in all people. If you are uncertain of the amount of sunshine you need, you can have your vitamin D levels tested.
The 'official' War in Europe began in Poland on September 1, 1939. Some historians have argued that the war began much earlier with the Spanish Civil War but September 1 â¦ st, 1939 is the date accepted when the U.K., France, and Commonwealth nations declared war on Germany in response to the Polish invasion.
World War 1 started when Archduke Franz Ferdinand of Austria was assassinated on June 28, 1914. This was the immediate cause but there were a series of events which triggered the war. See below for more information and facts about how World War 1 started. Since Britain had agreed to maintain the neutrality of Belgium, they immediately declared war on Germany. 2  British and Germany forces first fought at the Battle of Mons in Belgium. 3  This was the first of many battles between Britain and Germany on the Western Front and is when World War 1 started for Britain.