The Uspantek and the Ixil were allies and in 1529 Uspantek warriors were harassing Spanish forces and Uspantán was trying to foment rebellion among the K'iche'; the Spanish decided that military action was necessary.
The Uspantek were allies. The Ixil were allies. Uspantek warriors were harassing Spanish forces. This was in 1529. Uspantán was trying to foment rebellion among the K'iche'. Military action was necessary. The Spanish decided this.