idk who KNOWS ...............................
Answer:
Explanation:
The second half of the Zhou dynasty was the first time when China's history started to be recorded. People began to ponder over past events and form their own ideas about everything. This was also the first time when people waged violent wars against each other in China and wondered what could be done to avoid being killed. The afterthought of past events and outlook on future life forced people to think hard. Hence it was no wonder philosophers appeared.
Yes, that's a true statement.
Answer:
Vaccines
Explanation:
It is not known if it was a Chinese or Indian discovery but it was not popularized before the use in 1796. In 1796 Edward Jenner inoculated a boy in England and that prevented him from getting smallpox. This was later used as the groundwork for developing vaccines and today's vaccine culture and mass immunization would not be possible without Jenner and his experiments.
