1. Adoption of the United States Constitution:
- On June 25, 1788, the ninth state, New Hampshire, ratified the proposed United States Constitution, making it the first officially established Constitution of the newly declared American Republic.
- With New Hampshire's ratification, the required threshold of nine states' approval was met, thus initiating the process of formalizing the newly created federal government and governance structure for the United States.
- This milestone marked a critical step in creating one of the world's oldest written and continually operating constitutions.
2. Start of the Russo-Turkish War:
- June 25, 1788, saw the commencement of the Russo-Turkish War (1787-1792) between the Russian Empire and the Ottoman Empire.
- Russia's main impetus for engaging in conflict was due to territorial rivalries over lands near the Black Sea coastline and the need to gain access to warmer waters.
- This event represents one of the numerous historical episodes of conflict and power struggles between the two empires that lasted throughout the eighteenth and nineteenth centuries.
- The eventual outcome of the conflict resulted in an expansion of Russian geopolitical influence in Southern and Eastern Europe.