Looky here, it's someone who knows nothing about the lore! Every race has it's origins explained already. We can't leave the solar system, the fallen's homeworld got destroyed in their collapse, the hive are interstellar and occupy entire star systems, the taken are just a hive subspecies under the control of savathûn, the vex is too much for me to condense but they're basically as old as time itself and originated from the garden before time(possibly the black garden?) Back when the gardener(the light, but NOT the traveler) and the winnower(darkness) were buddies and coexisted, doing their own thing. Then the gardener wanted complexity in everything that exists and became the enemy of the winnower.(fellow lore nerds, I simply oversimplify for the uneducated) just read the unveiling lore book and the books of sorrow for the vex origin. After the universe was born, the microscopic species known as the vex was peaceful, and the radiolaria(vex milk) that multiple vex can combine into found a way to create shells for them to control and move around in(the vex we know today). Details are hazy from there, but oryx during his conquests, gained taken powers and wiped a people called the ecumene from existence. The vex saw this and created a mind to understand what's happening. That mind learned the sword logic and now all the vex follow the sword logic, but the mind got taken by oryx. The cabal are a vast empire, and calus' daughter is implied to be in control now. Aside from the red legion, all the cabal are friendly with us, because of calus. Calus basically is obsessed with us, and doesn't want to be our enemy, but wants us to join him as part of his plan to be the last living thing. Actually learn before you start going on about not knowing stuff you're too lazy to research.