https://lego-x.com/2020/01/16/lego-company-history-production-features/
Throughout its history, lego has enjoyed a wide range of production features. These features have allowed Lego to develop some of the most popular toys in the world. These features include the creation of a unique interlocking mechanism and the use of plastic in place of other materials. These unique features enabled the company to become the most popular toy maker in the world.
In the 1960s, the company continued to expand rapidly. Dagny, Godtfred Kirk Christiansens cousin, joined the company in the year 1960 as a model builder. Dagny had a knack for creating large scale models and worlds which were displayed in the showroom. This was a great way to advertise the possibilities of the LEGO bricks and also to generate interest among children.
In 1971, the LEGO system expanded into new areas with the addition of furniture and dollhouses. In 1972, the LEGO system was further expanded by the addition of boat and ships sets that had floating hull pieces. In the 1960s, the company began its international expansion by selling its products in North America via a licensing agreement with Samsonite.
In the late 1980s and early 1990s the company continued to expand in size, diversify and modernize. This included the establishment of an R&D department, which has worked to keep the LEGO system on 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 they should do on their own. This was a first step towards building more complex models and also allowed children to have a more interactive experience with Legos.