Across
1
Period of ten years
6
Armed entry into another territory
7
Person who travels to discover new lands
8
Object made by humans from the past
9
Government elected by the people
11
Military blockade of a fortified place
13
Formal agreement between nations
Down
2
Freedom from outside control
3
Territory controlled by another country
4
Long and distinct period of history
5
Military conflict or fight
10
Advanced stage of human society
12
Succession of rulers from same family