The history of gratin dates back to ~
と書きたいのですが
「19世紀前半」はどのように書けばいいですか?
「19世紀前半」
- the first half of the 19th century
- the early 19th century
The history of gratin dates back to the first half of the 19th century.
The history of gratin dates back to the early 19th century. -> more natural