Final answer:
Canada is characterized by women marrying late, pursuing careers, and having access to extensive services, which is indicative of an economically developed nation. This results in a more even age distribution among various demographic groups.
Step-by-step explanation:
Canada represents a nation where women tend to marry later, enter the workforce, and have access to significant social and medical services. This reflects the characteristics of a more economically developed country, where there is typically a high level of gender equality, broad educational and employment opportunities for women, access to healthcare, and family planning resources. These factors contribute to women having fewer children and at a later age. This situation contrasts with economically undeveloped countries, which often exhibit higher proportions of youth and young adults with fewer elderly due to different socioeconomic conditions, including lower levels of education and employment opportunities for women.
Additionally, high-income nations like Canada are approaching a demographic where the elderly will form a larger share of the population by 2020, and this trend is expected to continue. This distribution has a significant impact on the standard of living for both the young and the old and reflects the effects of industry structure and economic institutions on demographic trends.