sentences:  These threats eventually spurred increased cooperation between American and Mexican authorities, especially when concerning mounted cavalry forces.Tensions between the U.S. and Mexico remained high, but a combination of factors in the U.S. brought about recognition of the Díaz regime.These included the need to distract the U.S. electorate from the scandal of the 1876 election by focusing on the international conflict with Mexico as well as the desire of U.S. investors and their supporters in Congress to build a railway line between Mexico City and El Paso, Texas.