The Junction Treaty of 1590 PD was a treaty between the Star Kingdom of Manticore and the star nations closest to the first three termini of the Manticore Wormhole Junction to be discovered: Beowulf, San Martin, and Hennesy.
Signed during the rule of Queen Elizabeth II, the treaty gave each of the three star nations shared sovereignity with Manticore over its respective terminus. It also granted them an identical share of the Junction revenues, as well as the same discount on transit fees.
The terms eventually led to the San Martin War.
The treaty was modified during the rule of Roger III, with Manticore getting undivided sovereignty over the Beowulf and Hennesy termini, in return increasing these two nations' percentage of transit fees and adding a secret clause which amounted to a mutual defense treaty. (Companion)