This is on all of the Anglo-Frisian languages, which are:
Proto-Old English, Northumbrian, Mercian and Kentish, West Saxon, Early Northern Middle English, Early Midland and Southeastern Middle English, Early Southern and Southwestern Middle English, Early Scots, Northern Middle English, Midland Middle English, Southeastern Middle English, Southern Middle English, Southwestern Middle English, Middle Scots, Northern Early Modern English, Midland Early Modern English, Metropolitan Early Modern English, Southern Early Modern English, Southwestern EME, Yola, Fingallian, Modern Scots, Northern Modern English, East West Modern English, Standard Modern English, Southern Modern English, and West Country Modern English.
All of these languages (minus six) have something in common: you, as a speaker of English, can understand them.*
*Some will understand better than others; for instance, one knowing German and English would have an easier time. With practice, older forms of Scots and the like will become more comprehensible.
Proto-Old English, Northumbrian, Mercian and Kentish, West Saxon, Early Northern Middle English, Early Midland and Southeastern Middle English, Early Southern and Southwestern Middle English, Early Scots, Northern Middle English, Midland Middle English, Southeastern Middle English, Southern Middle English, Southwestern Middle English, Middle Scots, Northern Early Modern English, Midland Early Modern English, Metropolitan Early Modern English, Southern Early Modern English, Southwestern EME, Yola, Fingallian, Modern Scots, Northern Modern English, East West Modern English, Standard Modern English, Southern Modern English, and West Country Modern English.
All of these languages (minus six) have something in common: you, as a speaker of English, can understand them.*
*Some will understand better than others; for instance, one knowing German and English would have an easier time. With practice, older forms of Scots and the like will become more comprehensible.