Question: Before Mizoram, what was the name of the group of  missionaries that  ventured into east india?
Sentence: Prior to Mizoram, the Welsh Presbyterians (missionaries) started venturing into the north-east of India through the Khasi Hills (presently located within the state of Meghalaya in India) and established Presbyterian churches all over the Khasi Hills from the 1840s onwards.
Answer in sentence: yes