Complex sentence: The conflict started in 1808, with juntas established in Mexico and Montevideo in reaction to the events of the Peninsular War, and ultimately resulted in the creation of a chain of newly independent countries stretching from Argentina and Chile in the south to Mexico in the north.
Split into simpler sentences: The conflict started in 1808, with juntas established in Mexico and Montevideo in reaction to the events of the Peninsular War. The wars ultimately resulted in the creation of a chain of newly independent countries stretching from Argentina and Chile in the south to Mexico in the north.