What is the background of william blake's writing Lundon and the theme of this poem?

Writing background:

London's condemnation of social evils is the keynote. The poet captures three typical images that best illustrate these evils, namely, children sweeping chimneys, soldiers spilling blood on palace walls and prostitutes living on the streets. In a short poem of 16, all these are exposed and criticized incisively and vividly.

Writing theme:

He put his revolutionary enthusiasm, yearning for freedom and a better life.

Our love and hate for the dark society are fantasized and expressed in poetry.

William blake (william blake 1757- 1827),No. 19.

Ji, the first important romantic poet in England.

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His poems include Song of Innocence and Song of Experience. The early works are concise and lively, while the later works tend to be mysterious and obscure, full of mystery.