Original: At the beginning of the 19th century, the Spanish possessions in America began a series of independence movements, which culminated in Spain's loss of all of its colonies on the mainland of North, Central and South America by 1825.
Simplified: At the beginning of the nineteenth century, the Spanish possessions in America began a series of independence movements, which lead to the complete separation from Spain by the mid 1820's of Mexico, and the colonies in Central and South American.