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Q: What was developed until the early part of the twentieth century?
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How did the pension system evolve?

The concept of providing pensions for retired employees did not begin until the nineteenth century in Europe and did not significantly spread to the United States until the early twentieth century


What style of karate was developed in the first half of the twentieth century?

The early 20th century introduced a few new types of karate to the world. The first Brazilian jiu-jitsu studio was opened in the early 1920s. Sambo was introduced in 1938. Even the term "karate" was not officially recognized until 1935.


There is more aliminium on the earth than iron so why wasnt it used until the early twentieth century?

Aluminium wasn't used until the twentieth century due to the following reasons. They are difficult to extract in comparison with iron, they have higher abundance by less surficial concentration.


What were most early brushed made of?

Until the mid-twentieth century, brushes were made of natural materials such as hog bristles, horsehairs, and Tampico fibers.


Has America used flogging to punish law breakers?

In Colonial times, yes. The practice lasted, in some areas, up until the early Twentieth Century.


Censorship of art was never an issue until the twentieth century?

true


Until the twentieth century most American farms were owned by who?

In the Pacific Northwest, the south, the Appalachias, and areas around the Great Lakes, produce


What ocean fishing techniques were developed in the modern era?

Until the modern era, fish detection was done primarily by the eye. The twentieth century introduced new methods of looking for fish


When did fluid power become a common method of energy transmission?

Although hydraulic pumps for powering hydraulic cylinders were developed in the 19th century, it was not until the twentieth century that fluid power devices became a widespread means of energy transmission.


The traditional farming economy did not end in the US until the middle of the twentieth century?

While the traditional farming economy began to decline in the US in the early 20th century with the rise of industrialization and technology, it did not fully end until around the middle of the century. Factors such as the Dust Bowl, mechanization of farming equipment, and rural depopulation contributed to this transition. The shift towards more modern and large-scale commercial agriculture marked the end of the traditional farming economy in the US.


Did the traditional farming economy end in the US until the middle of the twentieth century.?

False


When was the assembly line developed?

The concept of an assembly line can be traced as far back as the early 1100's. It wasn't until the early 19th century that machinery was developed in order to pave the way for the modern assembly line.