WAEC - Islamic Religious Knowledge Irk (2013 - No. 24)
Compilation of the Qur'an became necessary because
Some companionslos their copies of it
ther were dialectial difference in it reading
many memorizers of the Qur'an did in RIddah wars
different materials were used in its compilation
Explication
It became necessary to compile the Quran because many of the memorizers of the Quran died in Riddah wars.