Depends on how you view him and what he did. I'm pretty sure you know he traveled the sea to find what we now know as the united states. Their goal was basically to find some gold for money but he didn't find any really. So it's really your opinion on how you think he did.
That statement is true.
In business management, open-door policy refers to the effort taken by the manager/organization to make the leaders of their organization became easily accessible for the subordinates.
This type of policy would be really ideal for the company who want to take care of their employee's concerns and hear out all of their ideas/aspirations.
Unions use many different tactics when it comes to breaking through an impasse at the bargaining table, but all of them have to do with the size of the union and the power that comes from numbers.