Which of the following actions is necessary for fulfilling the pillars of islam?
a. traveling to mecca
b. converting christians
c. earning great wealth
d. delivering prophecies

Explanation:

Mecca is the place which is holy to all the Muslims. Non Muslims are not allowed to enter. Pilgrimage to Hajj is considered to be the fifth and  final pillar of the Islam. The pilgrimage occurs in the twelfth month of Islamic calendar, it is mandatory for the Muslims to do pilgrimage to the hajj once in their lives if their body and finances are fit to undertake this journey. The ritual promotes the bonds of Islamic brotherhood as it shows that every one is equal in the eyes of Allah

your answer will be b. improving roads, bridges, and other infrastructure. hope i !

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.