How did nationalism contribute to the rise of american imperialism

Nationalists held a firm belief that their country was far superior that all others, hence wanting to expand it. Imperialism is the practice of keeping colonies to preserve the mother country.  
I apologise if this isn't the answer you are looking for and good luck on your assignment. Have a good day/night. :)

Race, for example, the chinese exclusion act

The answers can be found if you search the worskesheet name. but the answer is he carried a flashlight to lighten his load.