Which economic system is considered the most basic

The four more basic ones would be traditional economy and market economy, and both mixed and planned economy

Free market captialism. This is because it has minimal govenrment intervention and is the hands free alloance of millions of peoples personal econimcs decisions. All other types of economies have govenrment try to control and guide the economic deicions of millions of it's citizens and natrually this is complicated and near impossible to do.