[JavaScript] Asynchronous JavaScript: Promises, Async/Await, and AJAX - Chaining Promises

const getCountryData = function (country) {
  // country 1
  fetch(`https://restcountries.com/v2/name/${country}`)
    .then(response => response.json())
    .then(data => {
      renderCountry(data[0]);
      const neighbor = data[0].borders[0];

      if (!neighbor) return;

      //country 2 
      return fetch(`https://restcountries.com/v2/alpha/${neighbor}`);
    })
    .then(response => response.json())
    .then(data => renderCountry(data, 'neighbor'));
};

// getCountryData('Spain');
getCountryData('usa');