German settlers in Texas hired Texas' Mexican musicians. The Germans preferred music that they were used to, like waltzes and polkas played primarily on the accordion. The musicians began to adapt the German music by playing polkas but adding lyrics related to their Texas Mexican roots. This is how conjunto music originated.
The above passage BEST supports the ideas about —
how to peacefully resolve ethnic conflict
how a group protected its cultural identity
how polka music came to the United States
how German traditions influenced Mexican traditions