The king was astonished after meeting the shepherd because the shepherd knew that the guest he was entertaining was the king himself. This surprised the king because the shepherd lived a simple life and did not seem to be someone who would know about the royal family or their appearances.

Explanation:

The story of the shepherd and the king is a famous folktale that teaches us not to judge someone based on their appearance or occupation. The story goes like this:

One day, the king disguised himself as a commoner and went out for a walk in the countryside. As he was walking, he came across a shepherd who invited him to his house for a meal. The king accepted the invitation and went to the shepherd's house.

As they were eating, the shepherd asked the king if he was a traveler or a merchant. The king replied that he was just passing through. The shepherd then asked the king if he had ever met the king. The king was surprised by the question and asked how the shepherd knew about the king.

The shepherd replied that he had met the king a few years ago when the king had visited his village. The king was astonished that the shepherd had recognized him even though he was disguised as a commoner.

The king then revealed his true identity and asked the shepherd how he knew that he was the king. The shepherd replied that he recognized the king's eyes and his voice. He also said that he had heard stories about the king and had seen his picture in the newspapers.

The king was impressed by the shepherd's intelligence and perception. He rewarded the shepherd with a bag of gold and invited him to the palace to serve as his advisor.

In conclusion, the king was astonished after meeting the shepherd because he did not expect someone from a simple background to recognize him and know about his royal status. The story teaches us that intelligence and perception are not limited to a person's occupation or social status.

Shepherd thought that a king was a guest so new guess is the correct answer