Which finger engagement ring

In some countries like the United States and the United Kingdom, it is worn on the left hand ring finger, while in other countries such as Poland and Ukraine, it is customary to be worn the ring on his right hand. Similar traditions supposedly at the time of antiquity, from an early usage reportedly referring to the fourth finger of his left hand than with the vena amoris or "vein of love". The left hand ring finger has become more popular due to it being seeing on the big screen in holywood movies etc.