all of the EU has had the similiar banking system[1] for ages now. Tax handling can be an issue, but i won't see how this is different between the different tax

all of the EU has had the similiar banking system[1] for ages now. Tax handling can be an issue, but i won't see how this is different between the different taxes between US states. Also, culture and language are major barriers in the european market, legislation less so (especially if you ship physical products). 1: https://ec.europa.eu/info/business-economy-euro/banking-and-finance/consumer-finance-and-payments/payment-services/single-euro-payments-area-sepa_en https://ec.europa.eu/info/business-economy-euro/banking-and-...