"who is responsible for coordinating the activities of several fire companies in a defined geographic area such as a district

A BATTALION CHIEF is responsible.

Explanation: In the Fire service, there is a command structure and they are as follows, (in ascending order): Probationary Firefighter, Firefighter, Driver Engineer, Lieutenant, Captain, Battalion Chief, Assistant Chief, and Fire Chief.

Each rank has their own special duties.

In the BATTALION, there are several fire stations and multiple fire companies. A battalion chief, is in charge of a battalion who is responsible coordinating the activities of several fire companies, officers and fire fighters in a district. The battalion chief are also known as district chief.

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'

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