By 1840, how much cotton did the united states produce annually as a result of changes in technology?
a. about 3,000 bales
b. about 300,000 bales
c. about 1.3 million bales
d. about 1.3 billion bales.

By 1840 it was about "1.3 million bales" of cotton that the United States produced annually as a result of changes in technology, such as the cotton gin. 

How  did spanish  power increaseunder charles  v and philip ii? in 1519,charles  v inherited a huge empire. he became king of  spain  and was also the heir to the hapsburg empire. during his 42-year reign, philip worked to expand  spanish  influence, strengthen the catholic church, and make his own power absolute. hope this !