Complex sentence: A Nazi-sponsored pogrom on 1 March in which many Jews were killed, expedited the relocation, and over the next two months, wooden and wire fences were erected around the area to cut it off from the rest of the city.
Split into simpler sentences: A Nazi-sponsored pogrom on 1 March in which many Jews were killed, expedited the relocation. Over the next two months, wooden and wire fences were erected around the area to cut it off from the rest of the city.