What was pope urban ii's main reason for calling for the first crusade or "war of the cross" answers?

How do developments in the us space program during the ford administration reflect the foreign policy of president ford

(05.04 mc) how did the roman transportation system keep the empire strong? plz

Question 4 of 10 2 points how were the reasons for a person's enslavement different in west african cultures than in the atlantic slave trade? o a. in west african cultures, any unmarried man could be enslaved, while in the atlantic slave trade, only prisoners of war could become slaves. o b. in west african cultures, people had to be born into slavery, while in the atlantic slave trade, people had to commit a crime to become a slave. o c. in west african cultures, people could only become slaves if they owed debts, while in the atlantic slave trade, slavery was used to punish crimes. o d. in west african cultures, people were enslaved through war or as punishment, while in the atlantic slave trade, anyone could be ſom captured and enslaved previous obi