Supporters of manifest destiny believed it was the nation's duty to
maintain peaceful relations with other countries.
preserve traditional ways of making a living
spread democracy and christian ideals
live in harmony with american indians

Correct answer choice is :

While there had been miniature associations of Catholics and Jews as the Colonial period, the large immigration of the nineteenth and early twentieth centuries made a new entrance of Catholics and Jews to America. For the first time, Anglo-Protestant Americans were introduced to a new level of ethnic and religious difference and with it came to the difficulty to evaluate the true meaning of America’s dedication to religious liberty.