10. In the past, leadership tended to focus on the heroic efforts of higher-ranking individuals and their efforts to shape events. While there is still very much a place for this type of leadership, no one leader can master or control everything in a large organization.
(Alternative answer) In the past, leadership tended to focus on the heroic efforts of higher-ranking individuals and their efforts to shape events
; while there is still very much a place for this type of leadership, no one leader can master or control everything in a large organization.