What is the difference between ancient times and modern times

The difference between modern times and ancient times is that in the ancient times they use to have slaves (African American slaves) and today we don't, they use to go to war, they still didn't abolish slavery and you had to take an oath back in the days.

Explanation:

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i thinl it is the 1st answer

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.