3 mar 1820 año - Missouri Compromise
Descripción:
 In 1819, Missouri requested to be admitted to the union as a slave state. But, this would upset the balance of the free states and the slave stated. Congress settled upon a compromise, this was called the Missouri Compromise. It would grant Missouri's request to join the union as a slave state, but it also admitted Maine as a free state. An amendment was also passed that formed an imaginary line across what was formerly Louisiana Territory, this established boundaries between regions of slavery and freedom. 
Añadido al timeline:
fecha:
3 mar 1820 año
Ahora mismo
 ~ 205 years ago 
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