1749 1848 1799 1818
1917 1937 1927 1932
9000-7000BC 1-500AD 3000-1000BC 1000BC-100AD
1898 1912 1904 1908
1844 1904 1864 1884
1015 1615 1215 1415
Kepler (1571-1543) Leibnitz (1646-1716) Copernicus (1473-1543) Newton (1642-1727)
New Zealand Canada Netherlands United States
10000-9800BC 2700-2500BC 8600-8400BC 4700-4500BC
1000BC 500AD 100BC 100AD