The day was symbolised for me by the playing of our two national anthems, and the vision of whites singing ‘Nkosi Sikelel –iAfrika’ and blacks singing ‘Die Stem’, the old anthem of the Republic. Although that day neither group knew the lyrics of the anthem they once despised, they would soon know the words by heart.

Explanation:

 

The playing of their two national anthems, as well as the sight of whites chanting 'Nkosi Sikelel –iAfrika' and blacks singing 'Die Stem,' the Republic's ancient anthem, symbolised the day for Mandela.

 

Mandela is sure that the people would eventually memorise the anthems, although neither group knew the lyrics of the anthem they formerly disliked.

 

Meanings of difficult words:
 
Sl. No
Words
Meanings
1
ValleyA low area of land between hills or mountains, typically with a river or stream flowing through it
2
CrestThe top of a mountain or hill
3
RipeHaving arrived at the fitting stage or time for a particular action or purpose
4
DownpourA heavy fall of rain
5
ShowerA brief and usually light fall of rain, hail, sleet, or snow
6
IntimatelyIn a way that involves detailed knowledge
Reference:

National Council of Educational Research and Training (2007). First Flight. Nelson Mandela: A Long Walk to Freedom - Nelson Rolihlahla Mandela (pp. 16 - 23). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi..