Across
1
Long and distinct period of history
2
Advanced stage of human society
4
Formal agreement between nations
5
Payment made to show submission
6
Person who travels to discover new lands
10
Government ruled by a king or queen
11
Deadly epidemic disease
Down
2
Fortified medieval residence
3
Government elected by the people
7
Legislative body in ancient Rome
8
Sudden overthrow of a government
9
Succession of rulers from same family