Answer
The Industrialists
Explanation
The late 19th century identified John D.Rockefeller and Andrew Carnegie as leading industrialists who transformed the American business practices from the unregulated federal government system to form that concentrated power into them. Through this process, industrialists were able to dominate the industry and limit competition. This was accomplished through development of pools, trusts, mergers and holding companies.
But at home Japan's failure to gain an indemnity to pay for the heavy war costs made the treaty unpopular .
Communist countries. So countries like Russia, North Korea etc
It's actually D. D is part of the long geopolitical answer why European powers explored the world
I noticed that they are usually aquatic like animals. The regions mentioned consist of fish, shellfish and migratory birds (probably there for the fish). So the area is mostly aquatic based.