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Before the buses had doors and were wooden and now have  done of aluminium and already have doors. Before the buses had a cobrador that was the attendant of pasar the cards and at present have one schemes of tickets.

Now they have month buses since before almost no habien and habien many tails. Now as the desti than tea each bus have a different name.
In the century XX there are: Some of they goes to Barcelona, others  goes to beach and to To Prat and others one that goes to San Cosme

Some nouns are: 65 BARCELONA, LÍNEA 165, PR1, PR2, PR3, PR4, L10 EL PRAT, L78 EL PRAT...

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Before you scheme them  of steam of the train were wooden, the carriages fed with wooden coal and funcionaben gracies to the current continues, and had incorporated a whistle. Now at present to the 21st century work with electric energy

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The north thunders built by the year 2009 and the south stretch to the 2016 therefore they did not exist during the 20th century. And it has 24 stations, it works with the operator TMB

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In 1920 he destroyed much of his radio role that until then had had the newspapers as news, and its fleet-prestige transmitters grew tremendously during the years of World War II as it kept up-to-date to citizens of countries at war.

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The introduction of television destroyed the radio importance, thanks to the instantaneity of the information and the power of the image that accompanied them. The first broadcasts television commercials were conducted in New York City in the 1930s.

Later it began to create the TV networks that brought a lot of television channels were fed by the publicity on their channels

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But it was in the 20th century when it was created the world’s largest communication medium. A figure that was demonstrated when in 2006 the Internet came to thousand hundred million users. It contained more, and even Internet was available to anyone, and this is why today is the most used means of communication in the world.

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At first there were only periodic reports about foreign events, as the Kings and rulers prohibited broadcast national news. But it was later when in 1609 as published regularly in the city of Strasbourg a sheet printed with information coming from many European capitals were important primarily political and economic news.

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E-mail  has been an important mean of comunication in the last decade.
E-mails allows pople to communicate over internet Share potos, documents, programs, etc..