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:
availability of resources
1 mm = 0.0001m
450 x 0.001 m = 0.45 meters
The Spartans focused more on militaristic strength than on philosophical and intellectual pursuits.
They gave more respect to women than other Greek city states.
Their government was less democratic than other areas of Greece.
Answer
1. It set in a process that led to displacement, removal and relocation of the natives
2. Mining rested on the white American talent for claiming legitimacy
3. Created a rapid urbanization kind of settlement
Explanation
There was a friction between miners and Indians during the rush for Gold mining that resulted into the displacement of the natives. Mining in California rested on the white American talent for claiming legitimacy. This is to say that most of them were newcomers yet it did not prevent them from claiming legitimacy of the place as occupants ignoring natives that had the right to local resources. Mining in the west brought concentrated populations, where the mining patterns of settlements turned out to be the future settlement pattern of the region.