Constantinople created a lot of trade worlds as we expanded into the stars.  Arcturus.  Antares.  Celaeno.  Canopus.  Polaris.  Rastaban and more.  They all orbit giant stars that twist the fabric of hyperspace more than standard stars.  Starships can sail between them on rivers of gravity deeper and faster than those linking Earth with nearby stars.  They form a trade network so large even I haven’t seen it all.  You see, there’s some places I just ain’t welcome.