Final answer:
The temperance movement's rise was indeed influenced by the changing social conditions, including increased urbanization and immigration in the 19th century, making the statement true.
Step-by-step explanation:
The statement that the temperance movement stemmed in part from new social conditions such as increasing urbanization and immigration is True. During the 19th century, societies were undergoing significant changes due to industrialization, which led to more people moving to urban areas and a rise in immigration. These conditions created an environment where alcohol-related problems became more visible and pressing, prompting social reformers to advocate for the reduction or elimination of alcohol consumption through the temperance movement.