Complex sentence: Likewise, it is extremely rude to eat or drink when walking through a village, but one's host is responsible for the actions of his "guests," and may incur a fine from the village authorities if any breach of custom occurs.
Split into simpler sentences: Likewise, it is extremely rude to eat or drink when walking through a village. The host is responsible for the actions of his guests, and may incur a fine from the village authorities if any breach of custom occurs.