Question

Modern air conditioning for large office buildings was not available until the end of ______, and electric lighting was typically limited to incandescent lighting systems that offered minimum illumination.

1) the 1920s
2) World War II
3) the 1940s
4) the 1960s

Answer 1

Modern air conditioning for large office buildings became available at the end of:

a) the 1920s

Answer 2

Modern air conditioning and electric lighting for large office buildings became available in the late 19th century with the invention of the incandescent light bulb and the development of electric power plants. Air conditioning was introduced in the mid-1900s, revolutionizing work environments.

Step-by-step explanation:

The availability of modern air conditioning for large office buildings and electric lighting systems can be traced back to the late 19th century. Thomas Edison patented the incandescent light bulb in 1879, which revolutionized lighting in homes and factories. The development of electric power plants in the 1880s and Nikola Tesla's AC system allowed for the widespread use of electric lighting. The introduction of air conditioning in the mid-1900s further transformed working environments.