One significant advantage that Frederick Douglass had over many other slaves was "literacy," since his ability to read and write eloquently allowed him to make forceful and compelling arguments against slavery.
True the parliament had to have consisted of nobles because they were the more up-scale members
Governments need to have good laws, institutions and processes in place to ensure accountability, stability, equality and access to justice for all. This ultimately leads to respect for human rights and the environment. It also helps lower levels of corruption and instances of violent conflict.