What does House of Wittelsbach do in AoE3?

Removes: House of Habsburg; Removes: House of Hanover; Removes: House of Oldenburg; Removes: House of Wettin. The game says: "Form an Alliance with the House of Wittelsbach"

Technology

House of Wittelsbach

House of Wittelsbach (tech ID DEGermanAlliesWittelsbach) is a technology in AoE3: Definitive Edition 100.19.18309, 5 s to research at the Native Embassy. Effect: Removes: House of Habsburg; Removes: House of Hanover; Removes: House of Oldenburg; Removes: House of Wettin.

Quick answers (2)

What does House of Wittelsbach do in AoE3?: Removes: House of Habsburg; Removes: House of Hanover; Removes: House of Oldenburg; Removes: House of Wettin. The game says: "Form an Alliance with the House of Wittelsbach"
What is the tech ID of House of Wittelsbach?: DEGermanAlliesWittelsbach.

Form an Alliance with the House of Wittelsbach

What it does

Removes: House of Habsburg
Removes: House of Hanover
Removes: House of Oldenburg
Removes: House of Wettin
Mountain Trooper: becomes available, population +1, build limit +5
Chevauleger: becomes available, population +2, build limit +5
Makes researchable: Veteran Wittelsbachs
Makes researchable: Royal Guard Wittelsbachs

7 further effects (interface, visuals or AI) not listed.

Research time: 5 s
Game ID: DEGermanAlliesWittelsbach

Researched at

Native Embassy

Civilizations

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).