Complex sentence: In 1847 Mother Theresa and five companion sisters went to America to aid a group of German immigrants in rural Pennsylvania, eventually travelling as far west as the Mississippi River and establishing several missions for their order.
Split into simpler sentences: In 1847 Mother Theresa and five companion sisters went to America to aid a group of German immigrants in rural Pennsylvania. Eventually the sisters traveled as far west as the Mississippi River and establishing several missions for their order.