The correct answers are:
2. Created laws protecting slaves and prisoners.
During the 13th century, the king Sundiata Keita united all the kingdoms of Western Africa to create the Empire of Mali. In the year 1235, he enacted the Kouroukan Fouga, the non-written constitution of the Empire of Mali, which contained laws that protected slaves and prisoners. This constitution is one of the first declarations of Human Rights in the History of Humanity. It established that slaves should be treated properly and they could only be employed or liberated, but they could never be sold by their masters.
3. Created a cabinet of advisors
In 1235, Sundiata Keita created the Gbara, or great assembly, which worked as the deliberative body of the Empire of Mali. It was formed by 30 members from the different Mandinka clans.
This means that public services such as bathrooms or water fountains could still be whites only or blacks only but they had to be equal in quality. (i.e the bathroom for whites only could not be very clean and fancy while the blacks only bathroom was dirty).
The article of Confederation
Christopher Columbus was the first explorer to sail what are today the Caribbean Islands between North and South America. He sailed for Spain. Hope it help!