20th century Europe saw dramatic changes in life. The most devastating were that of the two world wars and the Great Depression. This led to new war weapons (radar, the tank, nuclear weapons, the fighter plane, poison gas, etc.) and economic transformation. Europe also saw a sharp increase in the standard of living and increased industrialization throughout the entire continent. In addition, medicine was dramatically improved.
If by aztest you are refering to the Aztec Empire, there are not any 20th century developments because it did not exist then. This empire lasted from 1428 to 1521.
20th century in Europe
transister.
Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
The Steamboat
The Steamboat
The locomotive
Sarah baartman
Radio and television
Radio was not an important invention in the early 20th century. Instead it was developed by Heinrich Hertz in the 18th century. The cotton gin (APEX)
The Steamboat
The Steamboat