Christians needed a justification that were at odds with their ideals of equality, so they claimed that Africans were (can mark more than one) * biologically inferior
not as intelligent
destined to be slaves
capable of being leaders

Biologically inferior

Not as intelligent

Destined to be slaves.

Explanation:

Although, I'm not a advid Bible reader. These are common excuses that were used throughout time to justify slavery.

following type of cultural development caused people to want and buy new products on the market :

freedom of speech is also protected by the 1 amendment.

explanation:

here is pretty much what the 1st amendment says:

congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the government for a redress of grievances.