Please help me with these questions

How did regional differences in italy initially prevent unity in the new nation?

Match the events to the impact they had on africa during the late 19th century 1.colonization of the congo 2.berlin conference of 1884 3.berlin act of 1885 settled tutorial disputes between european nations prohibited the slave trade in africa marks the beginning of scramble for africa

Which 19th century technological advancement would best allow farmers along the mississippi river in iowa to quickly transport their crops to buyers in louisiana?