Starting in the 400s C. E. and for the next 600 years, monks traveled all over Europe to OA) find Christian books and relics
O B) convert people to Christianity
O C) consolidate power for the new Rome
OD) collect tribute for the church of Rome

O B) convert people to Christianity

Explanation:

Monks who moved around during this period were known as Friars and they move around to preach the word of God in Christianity by trying to convert people to Christians. The period is often referred to as the Middle Ages or Medieval period. And the spread of Christianity by monks at this time is commonly referred to as Monasticism.

Hence, in this case, the correct answer is "monks travel all over Europe to convert people to Christianity."

a politically correct answer.

northernmost part (disputed, administered) - near indira col, siachen glacier - 35.674520°n 76.845245°e

northernmost part (disputed, claimed) - dafdar near beyik pass - 37°24′00″n 75°24′00″e

northernmost part (undisputed) - near dharwas, chambal district - 33.24902°n 76.82704°e

southernmost part (mainland) - cape comorin - 8.06890°n 77.55230°e

southernmost part - indira point in the nicobar islands - 6.74678°n 93.84260°e

distance between:  

1 & 4 - 3070 km

1 & 5 - 3654 km

2 & 4 - 3269 km

2 & 5 - 3885 km

3 & 4 - 2801 km

3 & 5 - 3430 km

explanation:

the use of email to replace slower surface mail.