If it's only regarding the invention of a specific dental equipment, it'll be to inform. the student is preparing to share their knowledge on the dental drill.
to persuade is usually the purpose when there's a question or an argument being raised, and in this case, it doesn't sound like anyone would be against dental drills. dental drills is also a fairly dry topic, so it's doubtful that the student would be aiming to entertain. it isn't a demonstration because the student likely isn't giving a step by step how to in regards to using a dental drill.
Answer:
In ties with Genghis, this culminated in a final breach. In the west of the empire, Jochi fled to his lands and never returned to Mongolia. In1226, he died. His sons, Batu Khan and Orda Khan, inherited his estate, collectively known as Jochi's Ulus.
i rewrote it for you
I think it was a typo and you meant "buy" not "but"
and they would be happy because this means that the company is planning to increase the production, which would likely lead to a renewed or increased empowerment of people.
