Who did Ethiopia resist during imperialism?

Italy and England.

The Italians attempted a conquest of Ethiopia in 1895 (the First Italo-Ethiopian War), but the Ethiopians forced the Italians to retreat using Russian and French-made weaponry. It was a horribly embarrassing affair for the Italians since Whites were believed to be genetically superior to Blacks and here was "White Italy" defeated by "Black Ethiopia". Italy would nurse this wound in pride by attempting a second (successful) invasion of Ethiopia over forty years later in 1935-1936.