What describes the relationship of old english to modern english

First is the difference in time in which the languages were used. Old English was spoken sometime between the 5th and 12th centuries. The Middle English was widely used late into the 11th century to around the end of the 15th century. The Old English developed over three periods with these sub-sects, the prehistoric, early Old English and the late Old English. Middle English came about in the second half of the 11th century and was spoken throughout the 12th and 13th centuries.

(NOTE: I have copied and pasted from a Word Document in which I answered the question.

to save the day, harry must get past a scary three-headed guard dog.

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