What event did spanish colonists use to their advantage in order to gain independence

answer; /// i do believe that its napolean's conquest of spain;

lee and grant, both of whom held the highest rank in their respective armies, had known each other slightly during the mexican-american war (1846-48) and began their dialogue by exchanging awkward personal inquiries. characteristically, grant had arrived in his mud-splattered field uniform while lee had turned out in full dress attire, complete with sash and sword.

explanation:

it increased the power of the king of england.