Post-1945 construction primarily introduced which material for interior wall coverings?

The introduction of drywall, also known as gypsum board or plasterboard, revolutionized interior wall construction after 1945. This material became the industry standard due to its ease of installation, affordability, and fire resistance. Drywall allows for faster construction compared to traditional methods such as lath and plaster, which require multiple steps and more labor-intensive work.

Additionally, drywall provides a smooth surface that can be easily finished and painted, leading to its widespread adoption in both residential and commercial buildings. It also offers improved moisture resistance when treated, making it suitable for various environments. The combination of these benefits contributed to drywall's dominance in the construction sector following World War II, as builders sought efficient solutions to meet the growing demand for housing and commercial space during the post-war boom.