tribal = {

	tb_danevirke = {
		potential = {
			OR = {
				FROMFROM = { title = b_slesvig }
				FROMFROM = { title = b_sonderborg }
				FROMFROM = { title = b_hedeby }
				FROMFROM = { title = b_ribe }
				FROMFROM = { title = b_flensborg }
				FROMFROM = { title = b_tonder }
				FROMFROM = { title = b_aabenraa }
				FROMFROM = { title = b_haderslev }
				FROMFROM = { title = b_kolding }
			}
		}
		desc = danevirke_desc
		trigger = { TECH_FORTIFICATIONS_CONSTRUCTION = 0 }
		build_cost = 60
		build_time = 365

		fort_level = 1.0
		
		ai_creation_factor = 86

		extra_tech_building_start = 10.0
	}

	tb_newgrange = { # Newgrange
		potential = {
			FROMFROM = { title = b_ath_cliath }
		}
		desc = newgrange_desc
		build_cost = 0
		build_time = 0

		culture_techpoints = 0.05
		liege_piety = 0.25
		monthly_character_piety = 0.25

		ai_creation_factor = 100

		extra_tech_building_start = 0.0
	}
}