Complex sentence: However, at Marcinkance, the local Jews had heard about the liquidation plans, as well as the horrible treatment on the Lithuanian site of the former Eastern Polish province, and the leadership of the Jewish community to decided to avoid a similar fate.
Split into simpler sentences: However, at Marcinkance, the local Jews had heard about the liquidation plans, as well as the horrible treatment on the Lithuanian site of the former Eastern Polish province. Therefore, the leadership of the Jewish community to decided to avoid a similar fate.