2. The 1920's By Victoria Dixon

3. 1921 The lie detector was invented in 1921. It was invented by John A. Larson, a medical student at John Hopkins University. The lie detector was created because they had no sure way of telling whether or not someone was telling the truth.

4. 1922 King Tut is found and believed to be an eighteenth century B.C. Egyptian Pharaoh. He is often remembered as the boy king because of the young age at which he became pharaoh. It is believed he came to his untimely demise at the age of eighteen.

5. 1923 In Kanto, Japan there was a great earthquake. This earthquake caused enormous devastation and cost many people there lives. The fire tornado killed 38,000 people. These fire tornados are rare.

6. 1924 One of the first hominid skeletons is dated more then 3 million years ago Raymond dart discovered a skull that was called the Tuang baby The official name given was Australopithecus africanus. Other discoveries convinced most scientist that there were two types of hominid skeletons.

7. 1925 Transistors are semi conductors device used to amplify electronic signals. These are important components in telephones and computers. Transistors are also regarded as one of the greatest inventions in the 1920's.

8. 1926 First liquid fueled rocket,was created An it was created by American scientist Robert Goddard It was successfully launched from his aunt's Effie's farm in auburn,Massachusetts, on march 16,1926.

9. 1927 The legionary movement was an odd form of fascism. This was founded by Cornelius Zelea Codreanu,on the 24 of June in 1927. They fought to keep tradition and their religious beliefs intact.

10. 1928 Penicillin is one of the most widely used antibiotics. Which was invented by sir Alexander Fleming after studying bacteria. Penicillin is a natural kind of antibiotic

11. 1929 The great depression was catastrophic event. The cause of this is a dramatic event was a large drop in the stock market. The depression started in 1929 and lasted for almost a decade. Many jobs were lost during this time.