A spike in birth rates in the United States during the post–World War II baby boom era caused an imbalance in available marriage partners for women 25 years later, thus lowering their marriage rates and delaying their marriages. This can be understood as an example of a .

Africa, 1914 which statement is the best conclusion for the information presented in the map? a) european colonization had a positive impact on african nations. b) african colonization the economic growth of all european nations involved. c) by the outbreak of world war i, most of the african continent was under english control. d) by the outbreak of world war i, most of the african continent was under european control.