William Walker was an American adventurer and soldier born in 1824. He is best known for his attempts to establish English-speaking colonies in Central America during the mid-19th century. Walker led several expeditions, the most notable being his takeover of Nicaragua in 1855, where he briefly served as president. His actions were controversial and led to international conflict. Walker’s ambitions were driven by a desire to expand slavery and promote American interests in the region. However, his rule was short-lived, and he was eventually ousted in 1857. He continued to pursue his goals until his death in 1860 in Honduras.