Late-19th century immigration to the united states would not have been possible without a) electricity. b) european wars. c) transatlantic flight. d) transatlantic steamships.

I'm gonna take a guess and say that the answer is D, translantic steamships. This is the most reasonable answer given that immigration of the mayflower was a ship.

to answer this question you need to explain more

the big question intentionally left by halloween 2018 is whether michael myers is really dead or not. the last time we see him, michael is trapped in the cage just as laurie's house starts to burn. however, when the film cut back to the flames, the room appears empty.

explanation:

hope this and mark me as brainliest if you want.