What was an important cause of the "Era of Good Feeling"?

The good feelings, perhaps better termed complacency, were stimulated by two events of 1816, during the last year of the presidency of James Madison: the enactment of the first U.S. avowedly protective tariff and the establishment of the second National Bank.

Explanation:

martin luther believed that selling indulgences was wrong and gave people a license to sin. the roman catholic church used the practice of indulgences to raise money for major building projects.