Answer:
France
Explanation:
Several chemicals were weaponized in WWI and France actually was the first to use gas they deployed tear gas in August 1914.
I think the answer is A. it prohibited slavery in the Northwest Territory
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The Vandals tribe occupied the Balearic Islands
The correct answer among all the other choices is Steam locomotive. This is the transportation development that had the greatest long-term impact on the American economy. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.