What are the positive and negative attributes of nationalism?

Positive: People within a nation overcoming their differences for the common good, Overthrow of Colonial rule, Democratic governments in nations throughout the world, and Competition among nations spurring scientific and technological advances.

Negative: Forced assimilation of minority cultures into a nation's majority culture, Ethnic cleansing, such as Bosnia and Herzegovina in the 1990s, Rise of extreme nationalistic movements, such as Nazism, and Competition between nations leading to warfare

to demand women’s suffrage

they were all fought in the middle east during ww1