One of my co-workers at Boeing was a Ph.D. engineer, and of Indian heritage. His uncle kept a black book of all the extended family, like to 4th cousins, and what they did and had. So when you needed something, you called uncle and asked who in the family did that. It kept money in the family and helped each other succeed. Very different from the American style of succeed or fail on your own.
I think we tend to forget that the various nations on the Indian subcontinent that once part of the Moghul or the British empires, or both, mostly have long-standing international trade and cultural links with many different countries.
Gujarat, certainly, has always had strong links with the Arab countries on the Gulf, and with East Africa, as well, of course, with the rest of India, and Asia too.
There's a huge Gujarati diaspora, and always has been, since Gujarat itself is a pretty conservative place, and young and ambitious people wanting to head to the big city, and with sufficient resources behind them, have always had ready access to a lot of big cities because of existing trade or cultural links.
So pretty much wherever you go, there's always an uncle or a couple of cousins not too far away if you need them, and several aunties who actually organise it all.