Final answer:
Compression of morbidity has occurred in industrialized nations due to factors such as improved health measures, sanitation, and medical advancements. The demographic transition model explains how life expectancy rises as nations advance from pre-industrial to postindustrial stages, ultimately leading to population stability.
Step-by-step explanation:
Over the past several decades, compression of morbidity has occurred in industrialized nations—as life expectancy has extended, the average period of diminished vigor before death has decreased. This trend of increasing life expectancy is notably due to improvements in public health, sanitation, and medicine. Furthermore, advancements such as clean water systems, better hygiene practices, and the development of vaccines and antibiotic medications have significantly played a role in this trend. In the context of the demographic transition model (DTM), countries pass through different stages of population and health dynamics. As a society transitions from Stage 1 to Stage 4 of the DTM, we witness a rise in life expectancy and a lower infant mortality rate amongst other changes. These stages illustrate the transformation from high birth and death rates to lower rates, eventually leading to a stable or even declining population as seen in postindustrial societies like Sweden.