Les Miserables is the name of the play. A man stole food to feed his starving family & was put in prison by the crooked police chief. Eventually he was released to find that the crooked police chief was now the mayor of the city where everyone was oppressed. He started a revolution and his army won. He went from rags to riches.
The Silk Road passed through 43 countries
It would be the "the preamble" that implies a plan of action and lists certain things to be changed, since the introduction is far more general in exclaiming why in fact they are claiming independence.
Promotion could have multiple meanings.
For example, if you say "Mr. Knight got promoted (or got a promotion) from supervisor to manager". There promotion means "raise".
If a product is at promotion there promotion means advertising efforts.
It could also refer to a way to support a cause. For example: There's a campaing supporting healthy lifestyle promotion.