contestada

Which of the following was not an important invention from the early 20th
century?
A. The typewriter

B. The electric lightbulb

C. The phonograph

D. The steamboat​

Respuesta :

D. The Steamboat I just checked my history books

(D) The steamboat.

Definitions:

Typewriter -

  • A mechanical or electromechanical keyboarding device is referred to as a typewriter.
  • A typewriter typically contains a variety of keys, and by pressing each key deliberately against the paper with a type element, a different single character is formed on the paper.
  • A typewriter user was also referred to as a "typewriter" at the end of the nineteenth century.

Electric bulb -

  • The simplest electrical lamp, which was created for illumination more than a century ago, is the electronic bulb.
  • The smallest, most basic light was what illuminated the cave.
  • The term "light bulb" also applies to the electrical bulb.

The Phonograph -

  • A phonograph, sometimes known as a gramophone in later incarnations, a record player since the 1940s, or more recently a turntable, is a mechanical and analog recording and sound reproduction device.

The steamboat -

  • On the Delaware River in 1787, John Fitch gave a functioning demonstration of the steamboat concept.
  • Twenty years later, the first truly successful design surfaced. Robert Fulton constructed it with the aid of Robert R. Livingston, a former American ambassador to France.

Therefore, the answer is (D) the steamboat.

Know more about Electric bulbs here:

https://brainly.com/question/8979272

#SPJ2