Translation:This is the Slovak village that was in Moravia back then.
The translation that was shown to me has a typo: 'This is the Slovakian village that thenwas in Moravia.'
What is the meaning of this sentence: change of a borderline?
Strange, the solutions haven't been changed for 7 months and the typo is not there.
Yes, it is a change of a border. Maybe https://cs.wikipedia.org/wiki/%C5%A0ance_(Vrbovce)