Which continent can be found at 0° latitude and 20° E? 180 W 140 W 100 W 60'W 20W 20'E 60'E 100'E 140'E 180'E
80'N
80N
60'N
60'N
Europe
North
America
Asia
40'N
40°N
20'N
20 N
Africa
0
0
20 S
South
America
20's
Australia
40'S
40'S
60'S
60'S
BO'S
80'S
Antartica
160 W 120 W 80 W 40W 040'E 80'E 120'E 160°E
A. Africa
B. Europe
C. South America
D. Asia

too long

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: