THE ANSWER IS RAILROADS!!
The answer in this question is FALSE, why? because when you didn't get the instructions or the lesson you need to learn you need to ask the seniors or the supervisor for clarification so that you will be able to do the task assigned to you well and it didn't make you feel ignorant when telling the truth that you really didn't understand the instruction.
Both the Mayans and the Aztecs developed advanced calendars and had an understanding of astronomy.
Hope this helps :)
