Main Page/Knowledge groups/sandbox

This page is a part of the Main Page and should stay protected at all times
 50px|link= Applied sciences          50px|link= People and social studies          50px|link= Daily life, art and culture                  Natural sciences and maths            50px|link= Government and law         50px|link= Religions and beliefs               50px|link=|class=skin-invert-image 
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