The postmillenial bit on the picture is not 100% accurate; there are different views among postmils about what the millennium is:

1. Some hold its a golden-age within the NT, as is represented in the graphic.

2. Some hold its the whole NT age, as with Amils.

3. Some hold its from 70 AD until a rebellion against Christendom "Satan's little season".

The main difference between amillennial and postmillennials is the latter believes that the gospel will advance much more in the NT age.

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Daniel Ritchie
Saintfield, Northern Ireland - Queen's University, Belfast:History/Politics
Member of Dromara Reformed Presbyterian Church of Ireland (Covenanter)