The inca civilization develop​

The Inca first appeared in the Andes region during the 12th century, the Inca began expanding their land holdings by the reign of their fourth emperor, Mayta Capac. The Inca began expanding their land holdings by the reign of their fourth emperor, Mayta Capac.

the answer to your question is a because laws act as guidelines as to what is accepted in society. without it there would be conflicts between social groups and communities. it serves as a norm of conduct for citizens.