Final answer:
The growth in magazine circulation at the end of the 19th century was due to increased literacy, improvements in the rail system, and the use of illustrations.
Step-by-step explanation:
The dramatic growth in magazine circulation around the end of the nineteenth century was influenced by a combination of factors. First, there was an increase in literacy rates, largely due to the expansion of public education and the emergence of high schools. Second, advancements in transportation, specifically the improvement of the rail system, made distribution and accessibility of magazines much more efficient. Lastly, the inclusion of illustrations in magazines made them more appealing to a wider audience, capturing the interest of those who were less literate or enjoyed visual content. All of these elements worked together to significantly boost magazine circulation during that time period.