How was marakanda protected, and how high is the wall?

Marakanda was protected because of its wall and it was surrounded by a moat.  The high walls were made up of mud bricks and clay.  The height of the wall was 11 meters and they were 8 to 9 meters thick.  It maintained its military importance until the 18th to 19th century.

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.

2018 means 2018 ce or common era

there have been other eras too including bce, which included way more years.