As of 2020, all 50 states have supreme courts and trial courts, but only 40/50 have established: a. town and village justice courts
b. small claims courts
c. intermediate courts of appeals
d. city and county courts​

c. intermediate courts of appeals

Explanation:

Most states in the United States have an intermediate court of appeals that are directly below the state Supreme court which allows them to reduce the workload of the Supreme Court by filtering cases.

There are 40 states with such courts and the states that do not have an intermediate court of appeals include: Delaware, Maine, Montana, New Hampshire, Rhode Island, South Dakota, Vermont, West Virginia and Wyoming.