This language may have been creolized due to the influence of Viking and Norman invasions.
This language's approximately 15 vowel sounds include multiple cross- linguistically marked segments, including a tense-lax distinction. That distinction stemmed from a chain shift that may have led to its relatively sparse inflectional system compared to other Indo-European languages, even those descended from one of its ancestors, Proto-Germanic; that shift is known as the(*) Great Vowel Shift. This language may have been creolized due to the influence of Viking and Norman invasions. For 10 points, name this language, spoken in Jamaica and the United States.
This language's approximately 15 vowel sounds include multiple cross- linguistically marked segments, including a tense-lax distinction.
{English} language [do not accept or prompt on “Old English” or “Middle English”]