Original sentence: In November 1974 Frei wrote a historic letter to Mariano Rumor, President of the International Christian Democrats, endorsing the Armed Forces intervention and denouncing what he alleged was an attempt by Allende to impose in Chile a Communist dictatorship
Edited sentence: In November 1973 Frei wrote a historic letter to Mariano Rumor, President of the International Christian Democrats, endorsing the Armed Forces intervention and denouncing the attempt by Allende to impose in Chile a Communist dictatorship