So we all know how the NCR sustains itself. It has a monetary system, agriculture, and has a strong industrial manufacturing base.
Are we told in the lore how the Brotherhood of Steel sustains itself? I never see any agriculture nor any manufacturing.
What I know so far:
Eastern Brotherhood before Fallout 4 operated on a "charity" model, whatever that means.
Midwestern Brotherhood draws some resources from local towns...so a sort of semi support through donations or do they exert taxation?
The Brotherhood trades on caps.