Final answer:
Antonia's American Dream is not explicitly mentioned in Book 2 of Ántonia, but the narrative suggests she aspires to prosperity and success, embodying the broader American Dream.
Step-by-step explanation:
Antonia's American Dream in the novel My Ántonia by Willa Cather is not explicitly detailed by the end of Book 2. However, we can infer from the text that Antonia aspires to achieve prosperity and success in the rural environment where she lives, as suggested by her determination and hard work. She desires a better life for herself and her family, resembling the broader American Dream of upward social mobility and the possibility for one's children to have a richer and fuller life. Though specific goals like becoming a successful farmer or other professions are not explicitly stated, her actions and efforts are in line with seeking a better future.