I think your answer should be B) Cotton, indigo and tobacco.
Glad I could help, and good luck!
can I ask you to explain more like are the answers the last few things??
<span>Further reading indicates the Native Americans provided a great deal of ready to eat food (corn, beans, squash, pumpkins, dried meat and fish, acorns, berries, etc.) as they were better farmers than the Europeans up until 20th Century yields.
if this helps leave a thanks</span>
Um ?......................
The best way to measure public opinion is through opinion polls - B
With opinion polls you get an idea what is the general idea about a certain topic from the public, as you usually get a high enough sample to deduce the relevant information.
To answer your second question I would say it is either B or C as being a sole proprietor usually makes you subjec to being a small business or you're forced to use factors of production less efficiently.
