Explanation:
The year 1815 began a period when national interests began to outweigh the interests of individual states. Having just defeated the British in the War of 1812, Americans shared a sense of national unity and loyalty to their country. They felt secure and began to enjoy a booming national economy.
The following factors are contributed to the rise of nationalism: Political and administrative unity, english language and western education, development of transport and means of communication, emergence of modern press, economic exploitation and revival of glorious indian heritage.
During the 1800s, nationalism fueled efforts to build nation-states. Nationalists were not loyal to kings, but to their people—to those who shared common bonds. Nationalists believed that people of a single “nationality,” or ancestry, should unite under a single government.
There was a wave of change coupled with people advocating for equal rights and a unified nation-state. The French revolution and rulers like Napolean played landmark roles in this new era of nationalism. From 1830 to 1848, numerous revolutions took place in the name of nationalism.
