How does the concept of the multiverse relate to the concept of extra dimensions in string theory?

The concept of the multiverse and the concept of extra dimensions in string theory are closely related, as they both suggest the existence of a larger, more complex reality beyond what we can observe directly. String theory is a theoretical framework that proposes that the fundamental building blocks of the universe are not particles, but tiny, one-dimensional strings. These strings vibrate at different frequencies and produce different particles and forces, depending on their frequency and mode of vibration. One of the key features of string theory is the concept of extra dimensions, which proposes that there may be more than three spatial dimensions in ....