I think it’s a platform that helps all people connect with their family but you can also use it for business purposes
A wiki is probably the best of the choices presented, because it's editable by everyone. But wikis get out of control pretty quickly if nobody is assigned to be the wiki-keeper.
Forum software can actually be the best approach, because forums can be divided into different topics for different projects, and posts in chronological order (with attachments) help everybody keep track of what happened when.
If the government and central bank don’t follow the economic policy, it could result in an economic depression
The answer is this: employees would feel that their opinions matter if open communication is established between the manager and the employee by removing barriers to communication.
An example to this would be having brainstorming meetings where employees are free to give their ideas. Another option would be by eliminating the need to call the manager using suffixes such as Mr. or Dr.