Does the foundation laid by ''  The principal parent of Yiddish is High German, the form of German encountered by Jewish settlers from northern France in the eleventh century.' logically support 'The principal parent of Yiddish is Eastern Slavic.'
'  The principal parent of Yiddish is High German, the form of German encountered by Jewish settlers from northern France in the eleventh century.###The principal parent of Yiddish is Eastern Slavic.