What happened in the year 1820?

Answer 1

In 1820, the Missouri Compromise was enacted in the United States, a significant legislative agreement that sought to maintain the balance between free and slave states. Missouri was admitted as a slave state, while Maine entered as a free state, thus preserving the balance in Congress. This compromise also established a boundary line at the 36°30' parallel, north of which slavery was prohibited in the Louisiana Territory. Additionally, 1820 marked the beginning of the Industrial Revolution in America, with advancements in manufacturing and transportation.