Part 1: The root of all the creations in the world lies in Zeir Anpin and Nukva… As explained earlier in connection with the World of Nekudim, the seven lower Sefirot are the root of all the individual creations, while everything above them is only a necessary preparation in order to reach this level (see Opening 51).
…and it is in essence through them that the world is governed. Since Zeir Anpin and Nukva are the chief root of the creations, they also make up the main levels of the governmental order to which those creations are subject.