What does Carlsbad Decrees do in AoE3?

Settler: hit points −50%, Coin cost +50%, Food cost +50%; Settler Wagon: hit points −50%, Coin cost +30%, Wood cost +30%, Food cost +30%. The game says: "Allows researching Imperial upgrades, but Citizens are weaker, more expensive, and population space is no longer free."

Home City card

Carlsbad Decrees

Carlsbad Decrees (tech ID DEHCREVCarlsbadDecrees) is a Home City card in AoE3: Definitive Edition 100.19.18309, in the decks of 1 civilization, sent from the Discovery Age. Effect: Settler: hit points −50%, Coin cost +50%, Food cost +50%; Settler Wagon: hit points −50%, Coin cost +30%, Wood cost +30%, Food cost +30%.

Quick answers (3)

Which civilizations have the Carlsbad Decrees card?: Germans.
What does Carlsbad Decrees do in AoE3?: Settler: hit points −50%, Coin cost +50%, Food cost +50%; Settler Wagon: hit points −50%, Coin cost +30%, Wood cost +30%, Food cost +30%. The game says: "Allows researching Imperial upgrades, but Citizens are weaker, more expensive, and population space is no longer free."
What is the tech ID of Carlsbad Decrees?: DEHCREVCarlsbadDecrees.

Allows researching Imperial upgrades, but Citizens are weaker, more expensive, and population space is no longer free.

What it does

Settler: hit points −50%, Coin cost +50%, Food cost +50%
Settler Wagon: hit points −50%, Coin cost +30%, Wood cost +30%, Food cost +30%

1 further effect (interface, visuals or AI) not listed.

Cost: 1
Sent from: I
Times it can be sent: 1
Game ID: DEHCREVCarlsbadDecrees

In these decks

GermansI×1

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