Final answer:
John Hanning Speke was the British explorer who confirmed Lake Victoria as the source of the Nile during his exploration in 1862.
Step-by-step explanation:
The explorer who came to confirm the source of the Nile at Lake Victoria was John Hanning Speke. Speke was a British explorer who, alongside Richard Francis Burton, went on an expedition to central Africa. It was during an 1858 exploration that Speke first sighted Lake Victoria and believed it to be the source of the Nile. Speke returned in 1862 to further explore the area, this time without Burton. Upon reaching the northern end of the lake and the outlet at the Ripon Falls, Speke confirmed his hypothesis that Lake Victoria was indeed the source of the Nile River, one of the longest rivers in the world.The explorer who confirmed the source of the Nile River and Lake Victoria was John Hanning Speke. In 1858, Speke, along with Richard Burton, set out on an expedition to explore the region around Lake Victoria and investigate the source of the Nile. During the journey, the two explorers faced numerous challenges, but they eventually reached Lake Victoria in 1858.
It was during a subsequent expedition in 1862–1863 that Speke claimed to have found the source of the Nile. He believed that Lake Victoria was the primary reservoir feeding the Nile River. Speke's conclusion, however, was met with skepticism and controversy, as his partner Richard Burton did not entirely agree with his findings.