I would have to say 2 and 5 because number 1 is wrong airplane tickets are expensive 3 isn’t entirely wrong it does open for trade because we can get products from other countries by air instead of on a boat. 4 you do get more jobs but they probably had pilots back then too. I would say your best bet is 2 and 5. 2 because it does make long trips faster than cars and If you have to go to a different country you don’t have to go by boat. And 5 because it does increase travel options so you don’t have to go on a boat or go somewhere by car. Hope this helps.