20th Century Timeline 1900 - 1999

Over the centuries of the 20th century, advances in technology, science, inventions and reinvention have accelerated faster than any other century.

From the early days of airplanes, cars and radios of the 20th century, these inventions surprised their novelty and miracles.

At the end of the 20th century, the spacecraft, computers, mobile phones, and wireless internet were all technologies we thought of as a matter of course.

Changes in the population dynamics of the population of the 20th century had a major impact on the workplace. The population ages, diversifies, and grows rapidly. The average life expectancy of newborn babies in 1900 was 47.3 years, 37 years of age in 1999 was 70.7.38 years, but in 1900 80% of Americans had fathers and mothers working in the work. The population at the beginning of the century was 76 million, but by the end of the century it was nearly 280 million. (The number of official censuses in 1999 was 273 million, but the 2000 census was calculated to be 281 million) 40

In the 20th century, the size of the labor force nationwide has been doubled. In 1900, the labor force registered 24 million people, of which 10 years of age reported useful professions; 1999 labor force was 139 million (over 16 years old) 2 However, This is not just an amazing number. The composition of work, compensation, workplace, and the nature of work also changed in this century. During the 20th century, the composition of the labor force shifted from industries dominated by major production occupations (such as farmers and forestry) to industries dominated by professional, technical and service workers . About the turn of the century, about 38% of the labor force worked on the farm. By the end of the century, this figure was less than 3%. Likewise, the proportion of work in the mining, manufacturing and construction industries fell from 31% to 19%.

The expansion of the government is one of the most significant developments of the 20th century. In 1900, the US government collected tax of only 567 million dollars. The total amount in 1999 was $ 1.7 trillion. In 1913, government expenditure as a percentage of gross domestic product (indicator of wealth creation) ranged from 1.8% in the United States to 17% in France. At the end of the century, it ranged from 34% in the United States to 65% in Sweden. Not so comfortable is that the violence by humans of the 20th century has also increased significantly. In 1900, British commander Horatio Kitchener proposed a new strategy for Boer War in South Africa. He gathered 75,000 people, most of them women and children and restricted them to the weakest prisons of death. They were the first victims of one of the most destructive inventions of the 20th century: concentration camps