Former slave lectured against slavery in great britain and the north

The correct answer is Frederick Douglass.

Douglass was born a slave in Maryland and escaped. After escaping, Douglass became a leader in the abolition movement in New England and lectured around the world, writing and speaking about his experiences as a slave and the institution of slavery.

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the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.