Question

in 'an elementary classroom in a slum' poem what does the line
'history is theirs whose language is the sun' mean?​

Answer 1

It means that only those people make and create history who have the warmth and strength or power of the sun.

Hope it helps u☺️☺️☺️

Answer 2

It means that one should never give up in life as people who have the courage and conviction to break free from the constraints of life are the ones who create history. Such people possess determination like the powerful Sun.

Also here Sun refers to the light of education as it has the power to transform the world.

Hope it helps!