Across
1
Person who travels to discover new lands
5
Formal agreement between nations
6
Practice of establishing foreign colonies
7
Practice of farming and growing food
8
Government ruled by a king or queen
10
Armed conflict between nations
11
Ancient Mesoamerican civilization
Down
2
Metal that replaced bronze in tools
3
Roman arena fighter
4
Ancient Egyptian picture writing
9
Union formed for mutual benefit
12
Belonging to a very old period
13
Period of one hundred years