4. by tradition, when does the presidential campaign begin?
a. in september, following the national convention b. after a candidate has gained enough electoral votes in the primaries c. when a candidate is officially nominated at the national convention d. with the new hampshire primary

D. With the New Hampshire primary. This is because it is one of the first in the country every election year and it marks when the candidates begin to run against each other 

Economic success prussia had a very strong economy, partly due to the success of the zollverein. stronger prussian army king wilhelm wanted to build a bigger, stronger army but was blocked by the prussian landtag (parliament).-credits to google for putting answer -credits to slideshare for making answer-credits to me for putting answer on brain.ly