In ancient times the greatest king of Greek Aleksandr of Macedonia couldn’t rule a huge empire which lied from Greek thought Persia till Indian borers just because he couldn’t effectively interact and communicate through all continent with his inferiors. In nowadays this problem is solved. We have much communication mediums like cell-phones and internet but expect for all this instruments we still have wars and disasters which causes human lives. The problem is not just in communication mediums but in peoples. Effective human interaction is a keystone of lasting peace, healthful nation and developed society.…
