Summarize how and why Axum became an important trading kingdom.
Here is a start:
Prospering thanks to agriculture, cattle herding, and control over trade routes which saw gold and ivory exchanged for foreign luxury goods, the kingdom and its capital of Axum built lasting stone monuments and achieved a number of firsts. It was the first sub-Saharan African state to mint its own coinage and, around 350 CE, the first to officially adopt Christianity.
If you are just going to use this data, put it in your own words, so you will learn more.