Explanation

For the first blank, the clue is the contrast established between Bavaria and the rest of Europe. Thus, the blank must mean something like weird. Felicitous and querulous do not mean weird, but anomalous does.

For the second blank, the opposite-direction trigger while, and the clue gained steam require a word meaning something like diminishing. Weltering and forswearing do not mean diminishing, but dissipating does. Thus, select anomalous and
dissipating.

Hence options B and E are correct!