Egbert is a quiet child who is very slow to adapt to change. however, if he is introduced gradually to new people or situations, then eventually he will accept them without too much distress.
thomas and chess would say his temperament is

a) active
b) slow-to-warm-up
c) difficult
d) eas

Thomas and Chess would say his temperament is B. slow-to-warm-up.

Explanation:

When a child has slow-to-warm-up temperament, it is understood that he/she is cautions and often nervous about new situations where he/she does not feel comfortable. He/she needs to be able to trust someone, for example.

In this case, we can see Egbert is quiet and it is not easy for him to adapt to change. By the name, it can be deduced that a gradual introduction to others will help him be less distressed and be able to accept new situations and people.

the arab empire adopted the muslim religion as their main belief. arabs would influence the people from the territories they invaded towards islam (the muslim belief).

nevertheless, throughout the history of the arab empire, rulers brought intellectual individuals from other religions to their centers of learning. these other foreigners included jews, christians, greeks, persians, and indians.   these resulted in the adoption of important knowledge developed by these cultures by the arabic empire. for example, the works of aristotle were translated from greek to arab and indian scientists brought the numerical concept of "zero" to the arabs.

nowadays, 93% of the arab population is muslim, which at the same time is subdivided in sects including the sunni, zaini, alawi, shia. the remaining 7% is composed mainly of christians.