Across
1
Advanced stage of human society
3
Long and distinct period of history
4
Exchange of goods between peoples
8
Military blockade of a fortified place
9
Alloy of copper and tin used in early tools
Down
1
Fortified medieval residence
2
Ancient Egyptian ruler
5
Object made by humans from the past
6
Period of one hundred years
7
Medieval land-for-service system
10
Armed entry into another territory