Zambia was relatively untouched by the outside world until the mid-19th century, when it was visited by Western explorers, missionaries, and traders. In 1855, David Livingstone became the first European to see the magnificent waterfalls on the Zambezi River. Known locally as Musi-o-tunya, or the "Smoke that Thunders," Livingstone renamed the falls after Queen Victoria. The Zambian town near the falls is named after him, and served as the capital of...