How did Daimyo's protect their lands?

Daimyo protected their lands primarily through the maintenance of private armies composed of samurai, who were skilled warriors loyal to their lords. They fortified their castles and estates with strong defenses to deter invasions and raids. Additionally, daimyo often formed alliances with other lords and engaged in strategic marriages to secure their territories and increase their influence. By managing local governance and fostering relationships with peasants, they ensured a stable economic base to support their military efforts.