By the early 1900s, most western countries had granted universal male suffrage. The women's suffrage movement in Canada worked to expand voting rights to women as well. Key organizations in the late 19th century promoted women's issues and social reform. World War 1 influenced expanding voting rights, first to women related to soldiers, then all female citizens over 21 for federal elections by 1918. The Persons Case decision of 1929 declared that women were eligible for political office. Continued advocacy led to greater social and economic opportunities for women in the post-war period and beyond.