To get right to your question--YES there are languages without question marks. None of the ancient languages--Greek, Latin, Arabic, etc had punctuation at all. The existence of a question was indicated by "interrogative particles"--sometimes question words familiar to us like "why," "what," etc., other times by suffixes often attached to the main verb, or by words untranslatable into English that function simply to alert the reader to a question. For example, in Latin, where there's no word order to help, these suffixes (or "enclitic particles") are important:
Habes librum (You have a book)
Habesne librum (You have a book, don't you?)
Interesting enough all East Asian Languages - Chinese, Japanese, Korean only have adopted punctuation in modern times. No punctuation is still the case in calligraphy and poetry.
From my study of Japanese in college I remember that there are letters or verb forms which can serve as punctuation similar to Latin. In this case the alphabetic letters, "ka", "te", "to" serve as punctuation.
Tabemasu = He eats.
Tabemasu ka = He eats?
Tabemasu te = "He eats," he said.
Kore to are to sore = This, that, those
The subject (I, he, she, they, we) in Japanese is often assumed since they feel it is rude to single out anybody so it is reflected in the language. So "tabemasu", can also mean I eat, she eats, they eat, we eat. Context determines its real meaning.
Who would have known I would one day use this information? Brought to you by my college language requirement. :smile: