Look at the four Canadian population pyramids on p. 81 in Knox et al. (2015). What demographic factors can we use to explain the different shapes of these pyramids (in addition to the baby boom)? Furthermore, based on the history of immigration policy provided by Van Dyk (n.d.), how might the immigration policies in place during these four different time periods be related to the shape of these pyramids?

Knox, P., Marston, S., Imort, M., & Nash, A. E. (2015). Human geography: Places and regions in global context (5th Canadian ed.). Pearson Education Inc.

Van Dyk, L. (n.d). Canadian Immigration Acts and Legislation. Canadian Museum of Immigration at Pier 21. https://pier21.ca/research/immigration-history/canadian-immigration-acts-and-legislation