How to pronounce“antislavery”in English

So moving across America in these middle years of the 1830s, Afong Moy confronted several issues, that of slavery, nativism, moral reformers,hostility toward Native Americans, and Native American removal, antislavery activists, treatment of the poor, and surelyanti-immigrant resentment. So we know of the trials that she had through others' accounts in their diaries.