I'm teaching world history next year. Where should I place the halfway pt?

[Bucky]

In planning my two semesters for next year, I found that the text book and recommended curriculums on World History place the halfway mark at the discovery of the new world. I mean no slight against ancient cultures, but that seems like it leaves way too little time to cover:

1. The Reformation and Counter Reformation
2. The Scientific Revolution
3. The development of nationalism and absolute monarchies
4. The age of revolutions and constitutionalism
5. The Napoleonic Wars
6. The age of imperialism
7. The industrial revolution
8. The growth of leisure time in social history
9. The women's movement of the 19th century
10. The two world wars
11. the growth of labor movements
12. The rise (and defeat) of totalitarianism
13. The Cold War
14. The independence movements of the third world
15. The technology revolution
16. The rise of Third Wave economies, and
17. The post-Cold War world

In other words, all the stuff that's relevant to understanding the development of modern life that would help shape the thinking of the future voters in my classroom. In a discussion with a colleague, I disingenuously suggested I should make WW1 the cut off point. I was told that's too recent.

Does anyone here have a suggestion about where I should be in history by the time of the December midterms?