Read the story of horus and seth. which sentence explains the significance of this story to ancient egyptians? after the god osiris became king of egypt, his brother seth took the form of a monster and killed him out of jealousy. osiris's son horus and his uncle seth competed in many contests to settle the argument over who was the true king of egypt. in the end, horus emerged victorious.[[3]] [[4]]his victory united the kingdoms of egypt and ushered in an era of peace and prosperity. from that day forward, the people of egypt considered each pharaoh to be horus in the form of a human.

In "The Contendings of Horus and Seth", Horus' victory over Seth did more than just symbolizing how the son of Osiris beat his uncle to became the new ruler of Egypt.

This mythological tale - at its core - served as a way to establish the kingship system (A hereditary monarchy) at the time, while also showcasing the way that society was conceived (As a world of deities and human beings).  

Considering this, the answer is option 4) "His victory united the kingdoms of Egypt and ushered in an era of peace and prosperity. From that day forward, the people of Egypt considered each pharaoh to be Horus in the form of a human."

the answer would be in this answer. someone already asked the question.  

the technology changed agriculture in an impacting manner since many people left the field work by a cellular or other technological appliances