Answer:
Correct answer is There was a renewed sense of nationalism.
Step-by-step explanation:
First option is not correct as this era came after the famous War of 1812.
Second option is correct as more and more people believed in the unity of the country, that mostly was connected with the presidency of Monroe.
Third option is not correct as religion didn't play such an important role in the country.
Last option is not correct also as this was not a period when this type of reforms were necessary.