Every team is made up of a team-lead and team-members. They interact. Personally. On a regular basis. Leadership is about that interaction. It is about the nature of that interaction.
Do Americans and Germans define effective leadership in the same way? Do they lead – and want to be led – in the same way? Where do the two business cultures draw the line between the what (meaning the strategy, the goal or objective) and the how (meaning the tactics, the path to that goal)?
When Germans and Americans collaborate they lead each other, and are led by each other. If they don’t get that right, their teams will fail. It’s that simple.