Answer:
The answer is C.
Explanation:
It is tangible boundaries (C) because these are natural/physical limitations. The other answers would mean that they were marked or created by humans.
Germany<span>, </span>France<span>, </span>Great Britain<span>, Netherlands, </span>Belgium<span>, </span>Portugal<span>, and </span>Spain<span> were all considered to have a future role in the </span>imperial<span> partition of Africa. The United States was invited because of its interest in </span>Liberia<span> but did not attend because it had no desire to build a colonial empire in Africa.</span>
A and D
A: a person should do good deeds
D: a person shall practice self control
I believe it is only these two, from my knowledge so far