Here are the answers organized and in the correct order:
1.) **Meroitic script**
2.) **Each one depended upon the other for trade items.**
3.) **In their trading relationship, Kush relied on Egypt for "Grain" and Egypt traded for "Gold."**
4.) **Drag and Drop the events from first to last:**
- **Kush Conquers Egypt**
- **Egypt Conquers**
- **Assyrians conquer Kush in Egypt**
- **Kush and Egypt continue to develop independently of each other**
If you need further clarification or more information about each point, feel free to ask!