Why does America use the Electoral College to elect its presidents instead of just using a straight popular vote?

Author, lawyer and Electoral College expert @TaraRoss explains that to understand the Electoral College is to understand American democracy 👇 https://t.co/sbqN9efRG8 https://video.twimg.com/ext_tw_video/1841891868943990785/pu/vid/avc1/720x720/uO9H3BdXaYNrlHLC.mp4?tag=12