There are many reasons to learn how to divide Dane into syllables. Separating a word like Dane into syllables is mainly to make it easier to read and pronounce. The syllable is the smallest sound unit in a word, and the separation of the Dane into syllables allows speakers to better segment and emphasize each sound unit.
Knowing how to separate Dane into syllables can be especially useful for those learning to read and write, because it helps them understand and pronounce Dane more accurately. Furthermore, separating Dane into syllables can also be useful in teaching grammar and spelling, as it allows students to more easily understand and apply the rules of accentuation and syllable division.
In the case of the word Dane, we find that when separating into syllables the resulting number of syllables is 1. With this in mind, it's much easier to learn how to pronounce Dane, as we can focus on perfecting the syllabic pronunciation before trying to pronounce Dane in full or within a sentence. Likewise, this breakdown of Dane into syllables makes it easier for us to remember how to write it.