Expanded trade, regional empires, and increased global trade are all effects of which of the following

Expanded trade, regional empires, and increased global trade are all effects of alliances and conquest.

You will need close allies to trade regionally in the beginning of the stages of the empire. 

Afterwards, you will have to conquer other people to become a regional empire.

Lastly, you would have to trade with globally for more allies that are much more powerful

hope this helps

Coolidge was  supporter of isolationism but he wasn't totally consistent in it. from one hand he didn't support joining league of nations by u.s but from the other he was initiator of kellog-briand pact which supports world peace. coolidge did not recognize soviet union and was only u.s president who visited cuba before barrack obama