The invention of is one of the most important inventions that took place in Western Europe during the late Middle Ages. It helps propel Europe into the Renaissance. - movable type

- castle building

- the weaving machine

- the toothbrush

c) legal battles last five weeks after the election due to the narrow victory in several states.

i believe your answer is d)

d

explanation:

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: