help with these please

Complete Writing Assignment:

1. According to the author of Economic Histories of the Opium Trade, which countries derived revenues from the Opium Trade?
2. What ethical and economic considerations explained these countries' policies toward the Opium trade?
3. What was the author's alternative argument about how the opium trade became less important for these countries?

book link: https://eh.net/encyclopedia/economic-histories-of-the-opium-trade/