Final answer:
The period from 1824 to 1840 witnessed significant changes in society and the economy due to political developments, as the emergence of political parties helped Americans navigate the evolving landscape. However, unresolved debates about slavery became a contentious issue.
Step-by-step explanation:
The period from 1824 to 1840 was marked by significant developments in politics that had a profound impact on the social and economic fabric of the United States. Option 2: Political developments led to significant changes in society and the economy, is the correct option. During this period, the emergence of the second party system, composed of the Democrats and the Whigs, helped Americans navigate the changes happening in the nation and provided a means for public debate on important political and economic issues. The political parties also played a role in safeguarding democratic principles and personal liberties. However, the central debates over the rights of the states and the federal government left the future of slavery unanswered, which later became a dangerous and poisonous element in American life.