They threatened the Kingdom and the roads leading to it in the second half of S9 in the run-up to the Fair. Instead of fighting them or giving in to their demands, Carol suggests hiring them to keep the roads safe and offers them payment and access to the Fair and to watch the movie, which they acc More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.