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Telecommunications in the early 21st century are much more advanced and universal than they were in the late 20th century. Only a few percent of the world's population were Internet users and cellular phone owners in the late 1990s; while as of 2023, 67% of the world's population is online, [ 15 ] and 78% of all people aged 10 and above own a ...
March 11: Madrid train bombings killed 193 people and injured around 2,000, Europe's deadliest attack since Pan Am Flight 103. September 1 – 3: On the first school day in Russia, a group of Chechen terrorists held students, parents and teachers hostage in Beslan school, in North Ossetia–Alania. During three days under attack, 334 people died.
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The start of the 21st century and 3rd millennium was celebrated worldwide at the start of the year 2000. One year later, at the start of the year 2001, the celebrations had largely returned to the usual ringing in of just another new year, [ 8 ] although some welcomed "the real millennium", including America's official timekeeper, the U.S ...
Examples include social-networking sites, video-sharing sites, wikis, blogs, mashups and folksonomies. Social networking emerged in the early 21st century as a popular social communication, largely replacing much of the function of email, message boards and instant messaging services. Twitter, Facebook, and YouTube are all major examples of ...
The firm was a co-founder in Ciena Corp., the venture that popularized the optical amplifier with the introduction of the first dense wave division multiplexing system. [128] This massive scale communication technology has emerged as the common basis of all telecommunications networks [3] and, thus, a foundation of the Information Age. [129] [130]
In the mid-21st century, around the year 2050, a Third World War will take place, between the United States, the "Polish Bloc", the UK, India, and China on one side, and Turkey and Japan on the other, with Germany and France entering the war in its late stages on the side of Turkey and Japan. According to Friedman, "I can’t possibly know the ...
At the turn of the 21st century, a number of websites, including the search engine Google, started a change in online advertising by emphasizing contextually relevant ads based on an individual's browsing interests.