Andrew Carnegie believed in the concept of Social Darwinism. Carnegie also believed that those who were wealthy had an obligation to use the wealth for good purposes.
well if the study was for regions then <em><u>D</u></em> would make the most sense
explanation: A would be wrong due to the fact it has nothing to do with the differences between regions
B would be wrong due to the fact its about a method not a ruler
c would be wrong due to the fact that it just doesn't meet your region requirement
d mentions regions & monarchy hence forth being your answer
<h2><u><em>
BRAINLIEST ME!</em></u></h2>
It included among its members such notables as Andrew Carnegie, Mark Twain, William James, David Starr Jordan, and Samuel Gompers with George S. Boutwell, former secretary of the Treasury and Massachusetts, as its president.
The correct answer is Ecological Foot print.
I wonder whether there would be also other options, but one very important aspect is the smog: the city center is where many industry-relevant things meet: the factories are all around it, transport, cars... and since it is surrounded by bad air, the air takes longer to dissipate. This is especially visible if the city is in a valley, such as Mexico city foe example.
