Who threatend the land trade routes of the far east

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now

At 3476 kilometer the moon's diameter is slightly less than the distance across from what

2. explain the two different types of egyptian calendars. 3. what architectural advances did the ancient egyptians make? what impact do these advances have on our lives today? 4. what did egyptian art usually depict? how does this compare to forms of art that we see today? 5. what all was found in king tut’s tomb?