Though he was a qualified doctor, lawyer, and journalist by the time he was 24, Walker had his sights set on a more adventurous career path. In 1853, he attempted but failed to seize and govern the Mexican province of Lower California. Undeterred, he led a small band of mercenaries to Nicaragua two years later, overthrew the government, and briefly served as president before being ousted. Despite his earlier failures, he tried once more to conquer Central America in 1860. What happened? Discuss
Source: The Free Dictionary