What is the best description of the mita system?

Mita system was one of the best inventions of the Incan government! Enormous construction of structures and highways was made possible because of the system. In the system all the people worked for the government for a certain period of time. This labor was free to government. During the Incan period, people were needed to work only 65 days to provide food for their family. So they had ample time afterwards. When it was someone elses turn, they had to join Mita. It was like the public service systems of modern times. Government took care of the family who was absent in the while working in MIta. In Mita people worked in building highways, construction of Emperor and nobles, monuments, bridges, houses, temple fields, Emporer fields and also mines.