I will say it's C. It extended over three major continents.
Among the choices provided above the country that last to join the allied fighting force is the United States who joined the fighting force in December 1941 after<span> the </span>Japanese attack on Pearl Harbor<span>. Thank you for posting your question. I hope it helps. </span>
The first crop that formed the basis of the economy in the Southern states was tobacco. But at the beginning of the 19th century cotton became the most important. During the 1840s and 1850s cotton became the chief United States export. It was known as "King cotton". The rapid agricultural growth of the South led to financial and political tensions between the Northern and the Southern states. Answer: The most important Southern crop in the 1840s and 1850s was cotton.
The south was technically fighting a defensive war, they had more time to prepare so really any of these answers could be right, but id have to go with they had either more money or more effective military commanders