How did nomadic invaders often have military advantages over the armies of empir

Question: How did nomadic invaders often have military advantages over the armies of empires!?

a) they were skilled horsemen
b) they had larger forces with more soldiers
c) they had smaller distances to cover
d) they developed better supply lines
e) they believed they were fighting inferior culturesWww@QuestionHome@Com

Best Answer - Chosen by Asker:

a) Scythians, Huns, Mongolians, and Sarmatians had cultures based of horses!. Their horse technology and skills made their calvary excel over all others!.

not b) They generally had smaller forces!.
not c) They covered thousands of miles to attack their enemies at home!.
not d) They were unable to maintain long sieges due to their inability to maintain supply lines!.
not e) They were usually out numbered by better armored foes!.Www@QuestionHome@Com