What did Otto van Bismarck use to promote Germany unification?

Was the fountain pen was invented by W B Purvis? Why did the Romans change their government form a monarchy to a republic? What happened in the first 4 crusades? Who is richer between aliko dangote and roman abrahamovic? What led to the development of medieval towns? According to Roman tradition who discovered Rome? What is a short definition for the word crusade? What day of the week was August 22 1945? What is the origin and meaning of the name Katelyn? What building epitomizes byzantine architecture? Why did people move to cities and away from manors during the middle ages? What helped cause the Renaissance in Northern Europe? What evidence of modern mass culture can you find your the turn of the 20th century? What terms describes the exchange of plantsanimalsdisease and culture between the Americas and Europe? Because the Crusades opened travel to the East and brought back new goods western Europe experienced a growth in? What set of laws simplified roman laws? Who wrote cloisters and the hearth? How many people were involved in the crusades? Why is frontier a good description of Great Plains region during a period in which cattle ranchers and farmers settled there? Who contributed to the theory of evolution?