example-promise-all.js

// npm i axios

const axios = require('axios');

function getCountryDetails(name) {
  return axios
    .get(`https://restcountries.eu/rest/v2/name/${name}`)
    .then(res => res.data);
}

Promise.all([
  getCountryDetails('spain'),
  getCountryDetails('france'),
  getCountryDetails('portugal')
])
  .then(res => console.log('Here is all  the data: ', res))
  .catch(err => console.log('Something went wrong getting all the data!'));