The establishment of a new rule is often accompanied by political instability and division. However, the transition of leadership to Solomon marks a rare moment of absolute national unity and sweeping agreement. Although his placement on his father's throne was already established, this period represents the final and complete consolidation of his power [אברבנאל, מלבי״ם]. His reign rested on three merging pillars: the will of his father David, who crowned him during his lifetime; the successful removal of internal political threats; and finally, the public revelation of his divine wisdom [אברבנאל, מלבי״ם].
This third pillar was the key to his universal acceptance across the entire nation. Once the people witnessed the profound wisdom God had granted, particularly the ability to execute true justice, they accepted the new authority completely and naturally [רש״י, רד״ק, מצודת דוד]. The kingship was inherently fitting and proper for Solomon because of this extraordinary wisdom [חומת אנך], a wisdom that ultimately granted him broad influence spanning the entire world [צאינה וראינה].
This widespread agreement stands in sharp contrast to the kings who preceded him. While Saul faced mockery from various groups at the start of his reign, and David ruled exclusively over the tribe of Judah for his first seven years, Solomon's authority was absolute from the very first moment. Upon inheriting the throne, he immediately became the undisputed leader of the entire nation [רד״ק, אברבנאל, מלבי״ם, ביאור שטיינזלץ]. The primary approach among commentators is that this extensive rule was not achieved through force. Instead, it was defined by deep affection. The people embraced his leadership with love and joy, without a single trace of rebellion, doubt, or resistance, even in their hearts.