Answer:
national security
Explanation:
National security, or national defense, is the security and defense of a sovereign state, including its citizens, economy, and institutions, which is regarded as a duty of government.
New roads and canals linked spurred internal trade new sailing techniques expanded trade and cultural exchange with other nations have a very nice day
Trajan left the largest Empire in Rome's history. Marcus Ulpius Trajanus (53 –117 AD) is one of consecutive Five Good Emperors, three of whom are listed here. He was the most successful military man in Roman history, expanding the Empire to its greatest extent.
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1799-1800
Idk if that’s right but that’s what popped up
