A variety of production features have benefited the Lego company throughout its history. Lego has been able to design many of the most popular toys around the world thanks to these features. These features include the development of a unique interlocking mechanism and the use of plastic instead of other materials. These unique features helped the company become the largest toy manufacturer in the world.

In the 1960s, the business continued to expand rapidly. One major change occurred when Godtfred Kirk Christiansens’s cousin Dagny Holm, joined the company as a model builder. Dagny was a pro at creating massive models and worlds which were displayed in the showroom. This was an excellent way to showcase the possibilities of LEGO bricks and to draw attention of children.

In 1971, the important link LEGO system expanded into new areas with the addition of furniture and dollhouses. In 1972, the program was further expanded by the addition of ships and boats sets that included floating hull pieces. The 1960s also saw the company start its international expansion, with sales in North America through a licensing agreement with Samsonite.

In the 1990s and 1980s, the company continued to expand and diversify its offerings, as well as modernize. This included the establishment of an R&D department that has helped keep the LEGO system at the top of its game in terms of innovation. It also saw the introduction of themed sets that allowed the user to build specific models without having to figure out what to do on their own. This was the first step towards building more complex models and also let children to have a more hands-on experience with legos.