Final answer:
The reigns of Saul, David, and Solomon have commonalities in ruling the Hebrew kingdom, establishing Jerusalem as the capital, and dealing with threats and military conflicts.
Step-by-step explanation:
The reigns of Saul, David, and Solomon all have several commonalities. Firstly, they all ruled over the Hebrew kingdom during the united monarchy period. Secondly, they established Jerusalem as the capital and made significant contributions to the organization and development of Israel. Lastly, they faced threats from neighboring kingdoms, particularly the Philistines, and engaged in military conflicts and alliances.