This is the 5083rd most frequent German word.
arabischen
"Arabischen" means "Arabic" (adjective form).
Here, 'arabischen' is an adjective modifying 'Länder', describing the countries as related to the Arab cultural or political regions.
Die arabischen Länder haben eine reiche kulturelle Geschichte.
The Arab countries have a rich cultural history.
In this sentence, 'arabischen' describes 'Schriftzeichen', referring to the specific writing system used in Arabic languages.
Ich interessiere mich für die arabischen Schriftzeichen.
I am interested in the Arabic script characters.
Here, 'arabischen' modifies 'Gewürze', indicating the spices that originate from Arab regions.