Answer:
1)why it happened?
=>Inspired by Fang and other 'people-power' movements around the world, in December 1986, student demonstrators staged protests against the slow pace of reform. The issues were wide-ranging, and included demands for economic liberalization, democracy, and rule of law
2)how?
=>Organized by the Union on April 27, some 50,000–100,000 students from all Beijing universities marched through the streets of the capital to Tiananmen Square, breaking through lines set up by police, and receiving widespread public support along the way, particularly from factory workers.
3)Describe the 1989 protests at Tienanmen Square.
=>Considered a watershed event, the protests set the limits on political expression in China up to the present day. Its memory is widely associated with questioning the legitimacy of Communist Party rule and remains one of the most sensitive and most widely censored topics in China.
Because it involved countries all over the world, there was new technology such as chemical warfare, tanks, planes, etc. and it was unrestricted warfare. The countries were attacking civilians as well. Also there were diseases.
Found it: Ocean trenches are found in every ocean basin on the planet
Johannes Gutenburg invented the movable type printing press. (Thank you world history class!)
here you go hope this helps
