<Li> Lego USA established in Brookfield, Connecticut . </Li> <Li> 1973: <Ul> <Li> Lego USA moves to its present - day location in Enfield, Connecticut . </Li> <Li> All Lego products are placed under one logo, a red square with the word, Lego, in white bordered by black and yellow . </Li> <Li> Lego first sells toys to Hungary . </Li> <Li> Lego Portugal is established . </Li> </Ul> </Li> <Ul> <Li> Lego USA moves to its present - day location in Enfield, Connecticut . </Li> <Li> All Lego products are placed under one logo, a red square with the word, Lego, in white bordered by black and yellow . </Li> <Li> Lego first sells toys to Hungary . </Li> <Li> Lego Portugal is established . </Li> </Ul> <Li> Lego USA moves to its present - day location in Enfield, Connecticut . </Li>

When did legos become popular in the us