Answer;
Nationalism convinced the people of Europe that their own nation could take on any military threat. This was a role nationalism played in the outbreak of world War I.
Explanation;
Nationalism reached a fevered pitch in Europe prior to the first World War. As a political tool, it was the belief that European technological, cultural, economic and military superiority was the cause for the subjugation of more backward economies and cultures.
The pan-Slavic nationalism inspired the assassination of Archduke Franz Ferdinand in Sarajevo in June 1914, an event that led directly to the outbreak of World War I.
Many of the rights and liberties Americans cherish—such as freedom of speech, religion, and due process of law—were not enumerated in the original Constitution drafted at the Philadelphia Convention in 1787, but were included in the first ten amendments, known as the Bill of Rights.
Shi Huangdi
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Cortes was able to defeat the Aztecs because of his warfare and the skills that they were able to improve back when they defeated the Moores
Yes, it is true that the Central Intelligence Agency backed the Bay of Pigs invasion of Castro's Cuba, since the goal was to overthrow the regime of Fidel Castro (although this failed miserably).