It was one of the first revolutions of its kind to occur non-violently, making it 'glorious'.
The rainy day is a symbol of life. The idea behind it is that life is like a rainy day because rain represents bad things that happens to you. The poem points out that we shouldn't be miserable because of it because even when there's rain, there's always sunshine behind it so just keep calm and carry on with life and things will get better.
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It was called a poll tax.
cultivation of water animals, such as eel and fish.
