Mountains of the Moon

Richard Burton, reknown explorer, traveled to many different places, spoke many different languages. Paired with John Speke, an officer in the British Indian army.
Their goal, to find the source of the Nile River. The second largest river and the longest in the world, and it's the only river where the water flows north.
A whole horizon of danger awaits these two. No map, dangerous wildlife and hostile tribes. Scarce land with barely any water. All they can do is travel west.
Taking some helpers they start their adventure. They faced many hardships, they had to withdraw and come back with more men when hostile natives ambushed them. The rugged land makes it hard to travel. Bugs and infestations makes it hard to sleep at night. Lions and other beasts lay await for them. It was a long and perilous journey but was it worth it?
During their journey the come across a King and his kingdom. Offering gifts, Richard gave him a handgun. Testing it, the King comes to like it's power. Of course, the natives of Africa are technologically impaired. The natives had spears, bows and arrows. The Europeans have guns. More importantly, machine guns. This would lead to the Europeans taking over Africa and each country having it's own chunk of the land.
Eventually John Speke himself discovers the source. A huge lake that he named Lake Victoria. Weird that a Lake in the middle of Africa would be named after a British Queen.
Richard Burton argues with John on the authencity of the lake. If it's the source.
And as time passed, John Speke commited suicide. Was it the journey and what he went throught? Was it the commotion over whether the lake he found was the source or not?

A price to pay when conquering the Mountains of the Moon....