Across
1
Armed conflict between nations
3
Sudden overthrow of a government
4
Payment made to show submission
7
Ancient Egyptian picture writing
9
Government ruled by a king or queen
10
Ancient Mesoamerican civilization
11
Period of one hundred years
13
Freedom from outside control
Down
2
Exchange of goods between peoples
5
Ancient Egyptian stone monument
6
Long and distinct period of history
8
Belonging to a very old period
9
Relating to the Middle Ages
12
Formal agreement between nations