REST countries API using REACT

Nice work on this challenge, Beatriz! It's great to hear that you had fun building it. Your solution looks really good. As you said, there are a few small bugs in there which would be worth trying to resolve. With the search, you need to use event.preventDefault() to stop the browser refreshing when the form is submitted. You also need to make sure that if no countries are returned that you're at least returning an empty array. This is what's causing the error as .map will only work on an array.

Keep up the great work!

Em termos de design ta igualzinho, i would recomend you to research for higher order functions like filter/map and the input/keypress/keydown events so that you can "filter" the elements by hiding them when typing or just filter some array with the elements you wanted and do the fetch json when sending the form.