give trade kingdom played an important role in the birth of the slave trade in Africa. while slavery was common in Africa, it became a lucrative commercial business when. started by slaves . African rulers encouraged this trade as it made them wealthier

Am i to late to answer your question

The 5th amendment allowed this to happen.

Students and school are nouns
good luck!

Betray, destroy, and obey do not need to be changed to add the suffix -ed, because the "y" at the end of each word is preceded by a vowel  (so  they would be spelled  "betrayed," "destroyed," and "obeyed").

but hurry is different; it has to  be spelled "hurried" because the "y" at the end of "hurry" is preceded by a consonant.