Which of the following were important achievements of the Kushites? Select all that apply.
A. the defeat of the Assyrian army
B. the invention of one of the world's first alphabets
C. construction of the largest pyramids in the area
D. the development of Africa's first iron-working city
E. the famous text, The Book of the Dead
F. the invention of papyrus
G. trade networks that stretched from Greece to south of the Sahara