Hope it helped you!
The answer is The US never joined the League of Nations.
At the end of World War l, in which of the following caused the greatest damage to President Wilson's legacy it is going to be the US will never joined to the League of Nations.
-Charlie
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.
B. the prohibition of sharecroping by freedmen in Indian Territory
India was more accessible to outsiders and this was the way in which geography affect the development of India differently than in the development of China. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helps you.