How was it built and who built it

Which groups of people most directly benefited from song innovations in the song dynasty‘s open border policy?

Annie and bart are coworkers. in fact, they share a cubicle wall. recently, they were involved in a fender-bender in the company parking lot. each blames the other for the accident, and the two have stopped speaking. would you advise them to try to settle their dispute through arbitration, mediation, or with a traditional lawsuit? why?

What are the most populous and least populous areas of russia? and why are some areas more heavily populated than others?