Read the following extract carefully and answer the following question :
Till recently, the Aryans were regarded as the earliest invaders of the land. It was thought that they came to a country which was uncivilised and barbarian, but modern research has proved that there were invaders even before the Aryans poured into this land. They had evolved a civilization higher than that of the Aryan hordes who came in their wake. These Pre-Aryans had displaced still earlier people and built up new civilization which has astonished modern scholars by its extent and depth. The Aryans invasion repeated the process and led to fresh infusion of the old with the new. This continued with the successive inroads of fighting races who came to conquer but remained to lose themselves in the Indian racial couldron. The Greek invaders were followed by Sakas and Huns and a hundred other nameless tribes. They all appeared on the scene as victors but were soon absorbed in the ranks of the vanquished.
(i) Who is the author of the essay and name of the essay?
(ii) Who were the Aryans in the past?
(iii) How did the invasion repeat?
(iv) Who were other invaders?
(v) What is the meaning of 'invader'?
