Follow the paradigm technology backwards to discover at least 5 earlier precursor technologies.

Follow the paradigm technology backwards to discover at least 5 earlier precursor technologies (levels). Find those that have had a major influence on the paradigm tech (not just versions of the same technology). List at least 4 technologies that are part of the "system" of the paradigm tech. Research each and all technologies (paradigm & system) answering the following questions on the poster:

I already choose 

CARS then go back to bicycles then trains then wagons then horses.