It was due to <span>the OPEC oil embargo</span>
Answer:
He removed the iron plug, this made it easier for them to be mass-produced, and cheaper to make
Explanation:
B. The French gave their land to the British Empire. But France kept Louisiana and traded it with Spain. The Spanish and French were deep allies during those times and it wouldn't be uncommon for nations to trade cities with eachother. Especially New Orleans or as the French say Nouvelle Orleans.
Any way it's B
They were slave states that decided not to join the confederacy and had storng ties to the north.