How did the aztecs build the floating gardens

The floating gardens were actually rafts. The rafts were anchored to the bottom of the lake, or to a strong tree in the marsh. They piled vegetation and reeds on top of the raft to help provide good soil and drainage. ... To solve this, Aztec engineers built mud and stone walls around each floating garden.

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:

e imma say squidward tentacles