Final answer:
The creation of settlement houses by reformers to assist immigrants and those living in slum neighborhoods is true. Such houses provided essential social services, embodying Progressive Era reforms. Also, the temperance movement's partly being a reaction to increasing urbanization and immigrant populations is true, while colonizationist schemes' popularity among black abolitionists is false.
Step-by-step explanation:
The statement that settlement houses were established by reformers who wanted to help people, especially immigrants in slum neighborhoods, is true. These institutions were a hallmark of the Progressive Era, initiated by social reformers like Jane Addams, who opened Hull House in 1889, and Lillian Wald, who established the Henry Street Settlement. These organizations offered essential services such as child daycare, evening classes, and free health care, aiming to improve the living conditions and opportunities for the working-class, predominantly immigrant populations.
As for the temperance movement, it is true that it was influenced by changing social conditions including increased urbanization and immigration during the late 19th century. These changes led to various social problems that reformers believed could be alleviated, in part, by reducing the consumption of alcohol.
In terms of colonizationist schemes in the early 1800s, it's false to suggest these were broadly popular among black abolitionists; many were opposed to the idea, seeing it as a plan to remove them from the United States rather than ensure their rights and integration within the nation.