Context: The francophone Swiss Rodolphe Töpffer produced comic strips beginning in 1827, and published theories behind the form. Cartoons appeared widely in newspapers and magazines from the 19th century. The success of Zig et Puce in 1925 popularized the use of speech balloons in European comics, after which Franco-Belgian comics began to dominate. The Adventures of Tintin, with its signature clear line style, was first serialized in newspaper comics supplements beginning in 1929, and became an icon of Franco-Belgian comics.

Question: Who started producing comic strips and theories about them in 1827?
Answer: Rodolphe Töpffer

Question: What century had comics in wide production?
Answer: 19th

Question: What 1925 cartoon made speech bubbles popular?
Answer: Zig et Puce

Question: What comics began to dominate in Europe?
Answer: Franco-Belgian

Question: When was "The Adventures of Tintin" serialized?
Answer: 1929

Question: Who started producing comic strips and theories about them in 1872?
Answer: Unanswerable

Question: What century had comics in local production?
Answer: Unanswerable

Question: What 1925 cartoon made speech bubbles unpopular?
Answer: Unanswerable

Question: When was "The Adventures of Tintin" unserialized?
Answer: Unanswerable