A source is one produced some time after the historical subject took place secondary or primary .

How did nationalism motivate italy's unification? the italian people wanted to return to a pre-napoleon ancien régime. the italian people wanted a republic nation free from austrian rule. the italian people wanted to instigate industrialization in italy. the italian people wanted to lead europe into the modern age.

How did the enlightenment change attitudes about existing political systems

What are some effects outside of europe because of world war 1?