Why were the first American railroads built in the South?

Explanation:Wooden railroads, called wagonways, were built in the United States starting from the 1720s. A railroad was reportedly used in the construction of the French fortress at Louisburg, Nova Scotia, in New France (now Canada) in 1720. Between 1762 and 1764, at the close of the French and Indian War (1756–1763), a gravity railroad (mechanized tramway) (Montresor's Tramway) is built by British military engineers up the steep riverside terrain near the Niagara River waterfall's escarpment at the Niagara Portage (which the local Senecas called "Crawl on All Fours.") in Lewiston, New York.

the cell goes through mitosis

explanation:

these conditions long with a short growing season made farming difficult.

explanation:

the north has a climate of warm summers and snowy cold winters. the terrain is rocky, hilly, and not good for farming.