The correct answer is Maryland
When unions were first organized, union leaders were in competition with one another in order to get the most active labor members, but they soon realized that this was a failing tactic and often united into single groups.
These people became wealthy mostly because of efficient trade between countries. Trading was an important factor back then, and your key word is COASTAL, meaning they are by a sea (aka trading routes). So the answer is trading between countries.
Answer:
I don't know if this is true or not but I can only think of Donald Trump. Sorry if this is wrong
Because Antarctica is freezing and its not as hot as Africa and asia
