Final answer:
The colonizationist scheme was not widely popular among black abolitionists, and proprietors of proprietary colonies had multiple responsibilities, not just collecting profits.
Step-by-step explanation:
The colonizationist scheme of the early 1800s, which involved sending freed slaves and freeborn African Americans to Africa, was controversial and not unanimously popular among black abolitionists. While some saw it as an opportunity for African Americans to live free from the oppression of American racism, many others saw it as an attempt by whites to remove African Americans from the United States entirely. Therefore, the statement that the colonizationist scheme proved to be popular among black abolitionists is largely false.
Regarding proprietary colonies, the idea that Proprietors were only responsible for collecting profits is false. Proprietors of these colonies had many responsibilities, including maintaining the colony, creating laws, and defending against invasions. This model was employed in several American colonies, such as Maryland and Pennsylvania.