Which of the following statements are true about frederick douglass?

he was an advisor to president lincoln during the civil war.
he advocated segregating all the public schools.
he was responsible for writing a famous autobiography.
he was a leader in trying to defeat the abolitionist movement.
he taught himself to read after learning the alphabet

is there only one answer? i can choose more than one answer so i just wanna be clear on the answer if there is one or more answers

Przed tob¹ mapa 2 rzeczypospolitej. literami a-g oznaczono na niej miasta, których krótkie opisy znajdziesz w tabeli. przerysuj tabelê do zeszytu. przy ka¿dym opisie wpisz w³aœciw¹ nazwê miasta i literê, któr¹ zosta³o ono oznaczone na mapie. nastêpnie zaproponuj, jak móg³byœ przebiegaæ szlak œladami historii 1 wojny œwiatowej i miêdzywojnia. ma ktoœ mo¯e zdj tego zadania? albo umie je zrobiæ? : ( plis szybko

1. discovered the new world balboa 2. explored the north american southwest hudson 3. his crew was the first to sail around the world vespucci 4. conquered the incas of peru cortes 5. discovered the pacific ocean columbus 6. conquered the aztecs of mexico cabot 7. discovered fishing grounds off newfoundland pizarro 8. looted spanish vessels for england drake 9. claimed the hudson river area for dutch coronado 10. priest who explored the mississippi marquette 11. man for whom the new world is named magellan

What man proposed a solution to the issue of slavery in the territories suggesting the idea of popular sovereignty