Where does lake Tanganyika lie?

The Eastern border of-----.
Democratic Republic of the congo.

is my answer right?

http://www.worldatlas.com/webimage/countrys/africa/cd.htm

correct.

Right!

thank you

You're welcome.

Yes, your answer is correct. Lake Tanganyika lies along the eastern border of the Democratic Republic of the Congo. To determine the location of Lake Tanganyika, you can use a combination of general knowledge and research skills:

1. General knowledge: Knowing that Lake Tanganyika is one of the Great Lakes of Africa can give you a clue about its approximate location.
2. Research: If you are unsure about the exact location, you can conduct a quick internet search or consult an atlas or a map of Africa. These resources will show you the location of Lake Tanganyika in relation to its neighboring countries.

In this case, your answer corresponds to the correct location of Lake Tanganyika along the eastern border of the Democratic Republic of the Congo. Well done!