Underneath the town is " Ridgetop Tunnel ", a railroad tunnel bored in the early 1900s.

Additionally since the early 1900s there have been various proposals for creating a bridge or tunnel across the Bering Strait.

However the steam locomotives left a polluted atmosphere in the tunnel and passengers preferred the ferries and by the early 1900s the railway was bankrupt.

There is also a large tunnel, hand cut into rock in 1923, originally used for car traffic in the early 1900s.

Huntsman's process was used for manufacturing tool steel until the early 1900s.

This shift was best exemplified by the Liberal government of Herbert Henry Asquith and his Chancellor David Lloyd George, whose Liberal reforms in the early 1900s created a basic welfare state.

Aided by the rediscovery at the start of the 1900s of Gregor Mendel's earlier work, Boveri was able to point out the connection between the rules of inheritance and the behaviour of the chromosomes.

Individuals are identified in the registry by means of a national identification number ( the so-called kennitala ), a number composed of the date of birth in the format and four additional digits, the third of which is a control digit, and the last of which indicates the century in which the person was born ( 9 for the 1900s and 0 for the 2000s ).

The European colonial period was the era from the 1500s to, arguably, the 1900s when several European powers ( particularly, but not exclusively, Spain, Portugal, Britain, the Netherlands and France ) established colonies in Asia, Africa, and the Americas.

The town's growth was facilitated by its role as the administrative and commercial centre of German East Africa and industrial expansion resulting from the construction of the Central Railway Line in the early 1900s.

Beet tops, an industry supported by the College and its associated agricultural experiment station, proved to be an excellent and abundant food for local sheep, and by the early 1900s the area was being referred to as the " Lamb feeding capital of the world.

Another game / superstition that was enjoyed in the early 1900s involved walnut shells.

Prague ham ( Prosciutto di Praga ), although originating in Prague in the early 1900s, is one of the most well known Italian cooked hams, and the province of Trieste ( which was part of Austria-Hungary until 1918, just like Prague ) is the center of its production ..

In the early 1900s a theory of international trade was developed by two Swedish economists, Eli Heckscher and Bertil Ohlin.

Developed in Germany in the early 1900s, it was transplanted to America in the 1920s.

By the 1900s, Lyon & Healy was one of the largest music publishers in the world, and sold new and antique violins, pianos, and other instruments.

Bosworth's design was influenced by the City Beautiful Movement of the early 1900s, and features the Pantheon-esque Great Dome housing the Barker Engineering Library.

In the early 1900s a significant alternative to light microscopy was developed, using electrons rather than light to generate the image.

Two additional recipes from the 1900s vary in the precise ingredients, but omit the cherry which was introduced after 1930 as well as the soda water which the occasional recipe calls for.

In the early 1900s Parma was also known as Cracker Hill.

Originally, the deck had to be composed by combining two poker, piquet or euchre decks and removing unneeded cards ( a piquet deck does not have the 2-6, making it easier to modify, and a euchre deck is exactly half a pinochle deck ), but with the game's popularity in the United States in the early 1900s, a single boxed deck with the necessary cards was marketed, and these specialized pinochle decks are now widely available in similar styles to common 52-card counterparts.

Rugby union was included as an event in the Olympic Games four times during the early 1900s.

However, the modern version of the stellar classification scheme was developed by Annie J. Cannon during the 1900s.

Another theory suggests the submarine was brought to the US by Dominic Conti ( 1874 – 1954 ), an Italian immigrant who came to New York in the early 1900s.

Formal instruction was also very popular ; however, the number of people educated using a planned curriculum at home dropped as public education grew in popularity during the 1900s.

In the early 1900s, sweet tea was an item of luxury used as an exhibition of wealth due to the expensive nature of tea, ice, and sugar.

The Brown-Curtis turbine which had been originally developed and patented by the U. S. company International Curtis Marine Turbine Company was developed in the 1900s in conjunction with John Brown & Company.

The primary filming location was an early 1900s farmhouse located on Quick Hill Road near Round Rock, Texas, where the La Frontera development is now located.

During the early 1900s, the game was banned in Russia because the rulers at the time believed that playing the game had an adverse effect on players ' eyesight.

At the end of China ’ s bloody civil war, in the early and mid 1900s, the country quickly closed off its borders to many outside countries and only maintained diplomatic ties with the Soviet Union.

The early 1900s saw the adoption of closed container boxes designed for movement between road and rail.

The town was primarily agricultural until the early 1900s, when the Klein Chocolate Company ( now part of Mars, Inc .) and several shoe factories ( the last of which closed in 1979 ) opened.

In late 1900s the day that of the City was founded is Jakin School is a Private School is Formally Part of Jakin School Board was Grades One through Twelve there is no Football field on this school. In 1966 When Jakin School was Closed were Sent to Blakely-Union Elementary, Junior High, and High School ( which later Became Early County High, Middle, and Elementary School ). while Carver school was built for African-American students grades One through Twelve. although late 1960s when Carver school was closed along with Kestler School was based in Damascus were sent to Washington High & Elementary at Blakely. In addition to small farm agriculture, Jakin's early economic growth resulted from turpentine.

A sulphuric acid plant was established on the banks of the Amstel in 1863, it closed in the early 1900s ; the site was subsequently ( 1922 ) used for a coal tar processor, Teerbedrijf Uithoorn, later known as Cindu Chemicals.

A second hospital known as McClung Hospital also served the area during Richwood's population boom in the early 1900s ; that hospital has long since closed.

The theatre had a troubled history, and was almost closed in the 1900s, but three freshman from the Loudonville High School ( Ohio ) raised $ 4, 000 dollars in a local talent show.

Clonasleigh, a house replaced by Shankill Shopping Centre ( now mostly closed ), was lived in by Frederick W. Meredith, once President of the Law Society, in the early 1900s.

It closed in the early 1900s.

The building closed as a workhouse in the early 1900s and first became a boarding house, then an inn and later a general store, called County Stores.

The main building, on 70 Oxford Street, was built for John Shaw in the early 1900s and was a furniture store run by the family until it closed in 1985.

The gardens closed in the early 1900s and the only surviving remains is the Ticket Booth, which is now a cafe beside The Plough public house.

The Centre closed temporarily in the early 1900s.

The landmark Dulzura Schoolhouse was a one-room fixture in the community from the 1900s until it was closed in the 1950s.