In what ways could a former slave make a more persuasive messenger for abolition that a person who has never enslaved?

The personal experience with slavery would allow for true stories of the experience rather than philosophical or moral arguments.

People would be more likely to believe a person’s first-hand accounts of abuses.

A former slave taking up such a cause could prove to people that free slaves could be capable citizens.

when a country suffers, for example, a drought period, the market product is affected for a low offer, in this case, potatoes; the government has to tax to the households, which have to give more money for the potatoes which they consume, that situation make them consume substitute goods even through loans, it could increase the financial market movement and the inflationary phenomena, the business has to increase salaries in order to the employees could buy a more expensive food (potatoes) and in order to inflation tha business had to buy expensive supplies in the factor market, while the rest of the world have to gain more money to consume the same amount of potatoes.