Final answer:
The use of lightweight materials allowed curtain walls to be used at the Bauhaus Building.
Step-by-step explanation:
At the Bauhaus Building, curtain walls were made possible by the use of lightweight materials. Contemporary architecture embraced natural light, open interiors, and large planes of glass and aluminum. These requirements led to the development of innovative materials that could support the new designs. One such material was aluminum, which is light in weight yet maintains the strength of steel. The use of lightweight materials allowed for the construction of curtain walls, which are non-load-bearing walls made primarily of glass or other transparent materials.