Which laws enacted immediately after the civil war were designed to maintain a social structure of slavery

New laws made it legal for owners to own enslaved people for their entire lives, slavery had no end. Laws made children born to enslaved people slaves.

Explanation:

The new laws had no chance for freedom.  They were legally considered property.

After you had slave codes, which were designed to keep enslaved powerless and scared and gave slave owners complete and absolute power.

not able to assemble unless a white person present

not able to own firearms

not allowed marry

not able to learn to read or write

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: