20. What structure is recognized as the greatest architectural achievement of Justinian's reign?

a)
Hagia Sophia
b)
Shehzade Mosque
c)
Notre Dame Cathedral
d)
The Kaaba

21.
What research library, staffed by Muslim scholars, became a great center of learning in medieval times?

a)
the House of Wisdom
b)
the Library of Alexandria
c)
the Hagia Sophia
d)
the Dome of the Rock

PLEASE IM BEGGING YOU BE QUICK ILL GIVE 100 POINTS I SWEAR ON MY LIFE

Explanation:

Ygvuycltzdy;5¢√;\\π±\±•π\±π\•±¢•±¢π±•£±•π£•π£π{£{•£{£{𣱕£]\±√\]π\±•π\𱱕\±π\π√±\]√\±√\√]\±√\•\•\√©√©°®°™=™

leonardo was the supreme renaissance painter, scientist, inventor, and polymath. da vinci is widely regarded as one of the greatest minds the world has ever produced. he was interested in everything from music to art and science. da vinci was an immense creative force at the start of the renaissance period. amongst his many works was the immortal painting – the mona lisa.

hope this : )

it's no easy i swear it's hard