Select the Word or Phrase That Best Matches the Definition

Select the word or phrase that best matches the definition or example .
-The flight of Muhammad and his original seventy followers from Mecca to Yathrib (later Medina) in 622 C.E. ;the journey marks the starting point of the Islamic calendar.

A) Quran
B) umma
C) Pillars of Islam
D) hijra
E) sharia
F) jizya
G) Umayyad caliphate
H) Abbasid caliphate
I) ulama
J) Sufism
K) Mullah Nasruddin
L) al-Ghazali
M) Sikhism
N) Ibn Battuta
O) Timbuktu
P) Mansa Musa
Q) al-Andalus
R) madrasas
S) House of Wisdom
T) Ibn Sina