Complex sentence: Marcos E. Becerra (April 25,1870--January 7,1940) was a prolific Mexican writer, poet, and politician who produced pioneering historical, linguistic, philological, and ethnographic studies relating to his country's pre-Columbian and early colonial past.
Split into simpler sentences: Marcos E. Becerra (April 25,1870--January 7,1940) was a prolific Mexican writer, poet, and politician. He produced pioneering historical, linguistic, philological, and ethnographic studies relating to his country's pre-Columbian and early colonial past.