What is the best example of a pull factor that might cause immigration

What role did mazzini play in italian unification? a.) he dreamed of a united italy and took the first steps to achieving it. b.) he conquered the southern part of italy, including sicily. c.) he was the first leader of a united italy. d.) he was assassinated by the french government, making him a martyr.

Who was in charge of american troops during world war i?

The low and midlevel clouds that look like cotton balls are