Final answer:
Chaucer wrote The Canterbury Tales in Middle English to better reflect the changing social dynamics of England, resonate with a wider audience, and contribute to the rise of English nationalism.
Step-by-step explanation:
Geoffrey Chaucer chose to write The Canterbury Tales in Middle English rather than French to reflect the changing social and linguistic landscape of England at the time. During the 14th century, the use of the English language was increasingly prevalent in literature and communication, particularly as England and France were developing into distinct nation states post the barbarian invasions. The rise of vernacular languages over Latin or French represented the interests and experiences of a broader audience, including the emerging middle class.
Chaucer's choice to use English over French also signified a cultural shift, emphasizing English nationalism and the importance of reaching an audience in their own tongue. Additionally, at a time when oral traditions were still strong among the Germanic peoples, writing in English helped stories resonate more with locals, cementing their legacy in the nation's literary heritage. Chaucer's Middle English text became accessible to a wider range of readers, reflecting a democratization of knowledge and literary enjoyment.