sentences:  The boundary drawn up between the two nations was the Uruguay River, with Portugal possessing the land east of the river.The seven Jesuit missions east of the Uruguay River, known as the Misiones Orientales, were to be dismantled and relocated on the Spanish western side of the river.The seven missions were called San Miguel, Santo Ángel, San Lorenzo Martir, San Nicolás, San Juan Bautista, San Luis Gonzaga, and San Francisco de Borja.