Answer:
Grand Canal was expanded and improved, overland trade routes, some of the greatest writers, porcelain, wood block printing, gunpowder, improved magnetic compass, and paper money are all advancements made during which dynasty.
Google ; )
If I had written your question in English, I could have helped you
Answer: Task analysis.
Explanation: Human Factors psychology is defined as the study of how workers interact with the work tools and how to create and enhance those to optimize productivity, health and safety of workers. For instance, <u>Human Factors psychologists research on the area of task analysis when they study what steps people take in order to successfully wash their hands before performing a surgery.</u>
I'm not sure what your question is but yes. It all started with a mob attacking british soldiers and the soldiers started firing guns which killed people.
