18211825

18211825 refers to a sequence of four consecutive years, 1821, 1822, 1823, 1824, and 1825. This period falls within the early 19th century and saw significant developments in various parts of the world. In the United States, this era was part of the "Era of Good Feelings," characterized by a sense of national unity and political stability following the War of 1812. The Missouri Compromise was enacted in 1820, addressing the issue of slavery's expansion, and its effects continued to be felt. The Monroe Doctrine, a key tenet of American foreign policy, was proclaimed in 1823, asserting that European powers should not interfere in the affairs of the Western Hemisphere.

Globally, 1821 marked the outbreak of the Greek War of Independence, a struggle against Ottoman rule that would eventually lead to the establishment of a modern Greek state. In Latin America, this period was crucial for the consolidation of independence movements. Simón Bolívar, a prominent leader, achieved significant victories during these years, leading to the liberation of several South American nations. The economic landscape was also shifting, with the Industrial Revolution continuing to transform production and society in Great Britain and spreading to other parts of Europe. These five years represent a dynamic period of political upheaval, nation-building, and ongoing industrial progress.