Across
1
Metal that replaced bronze in tools
3
Long and distinct period of history
4
Ancient empire that conquered much of Europe
5
Period of one hundred years
7
Military conflict or fight
9
Person with no fixed home
10
Ancient Egyptian ruler
11
Medieval religious military campaign
12
Fortified medieval residence
Down
2
Military blockade of a fortified place
5
Advanced stage of human society
6
Practice of farming and growing food
8
Belonging to a very old period