national security project By babyoda08 1607 the settlement of Jamestown Period: 1750 to 1774 Diplomatic Struggles in the Colonial Era Period: 1775 to 1783 Diplomacy and the American Revolution Period: 1784 to 1800 The Diplomacy of the Early Republic Period: 1801 to 1829 Securing the Republic Period: 1830 to 1860 Diplomacy and Westward Expansion Period: 1861 to 1865 The Civil War and International Diplomacy Period: 1866 to 1898 The Continued Expansion of U.S. Interests