The imperial powers of <span>france , england and spain send ships to mexico in 1861 in order to aid the Mexican economy due to its corrupt president Benito Juarez. Furthermore, these colonisers eventually implemented the gunboat diplomacy wherein Mexico is forced to pay its debts.</span>
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.
It's to avoid the full power of a monarchy.
If I'm right feel free to drop a follow~!
