Pacal the Great changed the rules of succession in the Mayan civilization by setting the precedent for rule to be passed down through a male relation.
the major periods of chinese immigration (from 1858 to 1923 and since 1947) reflected changes in the Canadian government's Immigration Policy. From 1885, Chinese migrants had to pay a $50 "entry" or "head" tax before being admitted into canada. the chinese were the only ethnic group to pay a tax to enter canada.
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When less sunlight reaches the northern latitudes, temperatures drop and more water freezes into ice, starting an ice age. When more sunlight reaches the northern latitudes, temperatures rise, ice sheets melt, and the ice age ends.
"The two dates most often mention as "the beginning of world war ll" are July 7 , 1937 , when the marco polo bridge incident' led to prolonged war between Japan and China, and September 1, 1939,when Germany invaded Poland, which led Britain and France to declare war on Hiltler's Nazi state in retaliation.
