Board Thread:Lore Discussion/@comment-72.74.78.209-20141019230536/@comment-17114085-20150110112743

The Silver-Bloods force and/or threaten their opponents into selling them their lands. Like they were trying to do to Karthwasten.

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Also, this is getting off-topic. This thread is about Ulfric, not the Black-Briars, the Silver-Bloods or any other Clan from Skyrim.