The assassination of Franz Ferdinand, the archduke of Austria-Hungary.
It was primarily for the right to vote
Explanation:
Muslim conquest in India subcontinent mainly took place from 12th to the 16th
The best and most correct answer among the choices provided by your question is the second choice which is "railroad tracks."
<span>By 1860 the Midwest and the East were united by a network of railroad tracks.</span>
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C and D are the best answers out of the bunch