Europeans' 'classical' justification for engaging in slavery was based on the writings of: a.
Thomas Aquinas
b.
Thucydides
c.
Aristotle
d.
a & c

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )

d) post-world war i

this is some false statement. aliens aren't real.

hope this .