How to Sell United States Dollar (USD) for Polkadot (DOT) in Portugal

To sell United States Dollar for Polkadot in Portugal, first, find a cryptocurrency exchange that supports the USD/DOT trading pair. Create an account, verify your identity, and deposit your USD into your exchange wallet. Locate the USD/DOT pair on the trading platform and place a sell order to exchange your United States Dollar for Polkadot. If the USD/DOT pair is unavailable, you can first sell United States Dollar for a stablecoin like Tether (USDT) or a fiat currency such as the Euro, then trade that for Polkadot. Be mindful of potential exchange fees, which vary by platform and can affect the total amount you receive.