The Emanicpation Proclamation freed all of the slaves in the United States, even those in the Confederate States; whether or not the Confederate slaves were actually freed at that time is another matter. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.
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Answer: the Indus Valley was believed to be collapse because of climate change
Explanation:
Experts believe that the dying of the saraswati River cause this to collapse leading to its disappearance
They were looking for the mythical 7 cities of gold which they never found, but they did find the grand canyon and several other famous landmarks
The Central Powers which included Germany,Austria-Hungary,Ottoman Empire and Bulgaria so A) because of the limited correct answers