The Mexican Cession happened in 1848. In this treaty, Mexico handed over Texas to the US. Hope this helps.
Answer:
A. Chiang Kai-shek and the nationalists turned against the communists and killed hundreds of them.
Answer:
They studied medication and zoology. Lewis asked Clark to come with him
Explanation:
So they could prepare to get ready
I think the sea of russia
Answer:
Correct answers are Mount Kilimanjaro and Ngorongoro Crater
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Explanation:
Mount Kilimanjaro is the correct answer as the highest mountain in whole Africa is actually dormant volcano, with three volcanic cones.
Ngorongoro Crater is correct answer as the crater itself was created by volcanic activity. The crater itself, located in Tanzania is under protection of UNESCO today.
All other answers are thus wrong, as are not created by volcanic activity.