Final answer:
In the first few decades of the 20th century, leadership definitions centered on the notion of charismatic leadership.
Step-by-step explanation:
In the first few decades of the 20th century, leadership definitions centered on the notion of charismatic leadership. This type of leadership emphasized the leader's strong personality and ability to inspire and attract followers. The leader had to appear charismatic and maintain this charisma over time, even as their position became more routine.