Since its beginning, Lego has benefited from a variety of production features. These features have allowed Lego to develop some of the most adored toys in the world. They include an innovative interlocking mechanism, as well as the use of plastic instead of other material. These unique features enabled the company to become the largest toy manufacturer in the world.
In the 1960s, the company continued to expand quickly. Dagny, Godtfred Kirk Christiansens cousin joined the company in the year 1960 as a model maker. Dagny had a knack for making large scale models and worlds which were displayed in the showroom. This was an excellent way to promote the possibilities of LEGO bricks, and to create interest among children.
In 1971, the LEGO system expanded into new territories with the additions of dollhouses and furniture. The LEGO system grew further in 1972 with the addition of ship and boat sets that included hull pieces floating. The 1960s also saw the company expand internationally with sales in North America through a licensing agreement with Samsonite.
In the 1980s, the company continued to expand and diversify, as well as modernize. This included the creation of a research and development department that has been working to keep the LEGO system on top of its game in terms of technological innovation. The introduction of themed sets allowed people to build specific models without having to build it on their own. This was the first step towards building more complex models, and it allowed children to get a hands-on experience with Legos.