How do you feel about the ways in which modern war is waged

In “the things they carried”, why is jimmy unsure when martha calls the pebble “a token of her truest feelings”

What point is the author trying to make by comparing the travel times of the first transcontinental railroad and the first transcontinental flight?

Which sentence best contrasts two things? a. air travel, like bus travel, is a fun way to get from one place to another. b. air travel is a fun and relatively easy way to get from place to place. c. both bus travel and air travel require substantial planning. d. air travel is much more expensive than bus travel.