STUDENT FROM BATAK COMMUNICATING ACROSS CULTURES (PHENOMENOLOGICAL STUDY OF BEHAVIORAL ADAPTATION OF BATAK STUDENTS, CLASS OF 2019-2018). CULTURAL ADAPTATION BASED ON THE INTERCULTURAL COMMUNICATION THEORY DEVELOPED BY BATAK STUDENTS AND PUBLISHED IN COMMUNICATION AND CROSS-CULTURAL ADAPTATION, AN INTEGRATIVE THEORY OF INTERCOMUNICATION BY YOUNG YUN KIM. THIS STUDY'S GOAL WAS TO DETERMINE HOW I…