The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
One language can break into new languages by first breaking into a new Dialect.
There are some notorious differences between a dialect and what we know as a language. It could be grammar or pronunciation. We can define a dialect as a variation of the standard or main language in a region. For instance, in the United States, the official language is English. However, depending on the region, there are people who speak dialect as is the case, for instance, of the Navajo Native Amerian Indian tribe, who speak Diné, their own dialect.