Step 1: Understanding the Concept:
The term "extension" has its historical origins in the university systems of the 19th century, where academics sought to extend the educational resources of universities to the wider public.
Step 3: Detailed Explanation:
- The term "University Extension" was first coined and used in the United Kingdom (UK) in 1873 by the University of Cambridge.
- This initiative was designed to deliver educational lectures and academic resources to working-class people who were unable to attend formal, on-campus university classes.
- Later, the USA adapted and expanded this concept, incorporating it into its land-grant university system under the Smith-Lever Act of 1914 to focus on agricultural extension.
- However, the initial coining and formal use of the term occurred in the UK.
Step 4: Final Answer
The term "Extension Education" was first coined and implemented in the United Kingdom (UK).