 As the main body of the Polish forces were engaged with the German armies farther north of the southern border, the Slovak invasion met only weak resistance and suffered minimal losses.March 14, 1939, saw the Slovak State established as a client state of Germany, initiating the breakup of Czechoslovakia.Before this, on November 2, 1938, the south-Slovak part of Czechoslovakia containing a substantial Hungarian population (the territory of Slovakia has been part of the Kingdom of Hungary) was taken by the Hungarian Army as a result of the First Vienna Award of November 2, 1938.