can someone help me connect thesetogether.

Napoleon/Romanticism
Industrial Revoluiton
Nationalism
Imperliasm
WWI
Russian Revolution/Communist Russsia
WWII
The Cold war

I need to show some connections between the events

You've listed these time periods in correct chronological order. Look for connections in your text -- such as --

* Napoleon/Romanticism led to the Industrial Revolution because of the opening of ideas and ideals.
* The Industrial Revolution led to Nationalism because the industrial countries wanted to solidify their borders and protect their profits.
* Nationalism led to Imperialism as the countries sought new sources of raw materials and outlets for their products.

I'm sure you can continue this pattern.