Name one or two sentences I should highlight. (What best illustrates why the Nanking massacre would lead to increasing hostility between the West and Japan.)

he sent troops to protect the students as they entered the school.

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

the intolerable acts- d