In many European countries in OTL, shops are closed on Sundays, because Sunday shouldn't be about business, but about rest and the worship of God.
Make it so that in addition to this, Catholic countries wouldn't allow shops and restaurants to sell bird and mammal meat on the Wednesdays and Fridays of Lent, and Orthodox countries would only allow the sale of vegan food and invertebrates during these days.
Make it so that in addition to this, Catholic countries wouldn't allow shops and restaurants to sell bird and mammal meat on the Wednesdays and Fridays of Lent, and Orthodox countries would only allow the sale of vegan food and invertebrates during these days.