PERIOD RESOURCES 

PERIOD 1:

1491-1607

PERIOD 2:

1607-1754

PERIOD 3:

1754-1800

PERIOD 4:

1800-1848

PERIOD 5:

1848-1877

PERIOD 6:

1865-1898

PERIOD 7:

1898-1945

PERIOD 8:

1945-1980

PERIOD 9:

1980-2018