It caused the rip tides like rise of Hitler or the reason Italy and Japan fell to facism and the US went ahead did their own treaties with the defeated.
It was established in Persia, today's Iran.
It has the lands of Iran and many of its today neighbourIng coutries, such as a big part of Turkey Aghanistan and Pakistan.
Civilizations connected through trade first via trading tools with other nearby communities then it evolved into trading more goods such as foods crops and weapons. Then with boats this allowed technology and customs to travel for example Egyptian sculptures influencing Greek art work and the silk road. This helped humanity since a example of isolation was japan until the Miji Restoration. Humanity needs trade in order to communicate and get things they cannot make in their region of the world.