The answer to your question is A. This is because they colonizers controlled the economy.
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.
Answer:
I would go with A War
Desired to be reunited with family is not forced
Slumping economy is not forced it is a choice
If the government were to force migation it would not provide an incentive, it would simple be the government made you
Explanation:
