Idon't need a whole essay (obviously that's my job), just some tips to me write it.

american life changed dramatically during the first part of the nineteenth century. the united states’ economy changed from a subsistence economy to a market economy. what does that mean and why did it happen?

write a well-constructed essay that:

• explains the difference between a subsistence economy and a market economy.
• explains the reasons why the shift to a market economy occurred.
• briefly describes the adjustments in manufacturing, agriculture, transportation, and communication that took place in each section of the country during this period.

which of these changes and innovations unite the country and why?

I wanted to add a file, its an awesome article to help you, but I can't so I'll copy and paste some of it:

-In various  regions of  the world the pastoral  economy shifted from subsistence oriented to  market oriented production."This shift   occurs  when monetary  exchange  becomes  regular  and so generalised   that  pastoral  products are no longer solely  produced for direct use by  the production unit, but acquire a monetary value, realisable through market exchange. When this  happens,  the  character  of pastoral  products as marketable  commodities is taken into  account, a priori, during  the  process of production itself. "Discussed  this process for Africa's pastoral production sector, and they  conclude that the  commercialisation often leads to specialisation by Rangifer, Special  Issue No. 15, 2004 narrowing the range of products  extracted from the herd. Frequently this  specialisation goes with a shift from milk production to meat  production which is encouraged by a general  price  decline  for milk due to competing products, e.g. milk-powder. Other strategies, allowing the pastoralist to respond to thedemand from the new  markets,  include a change in the herd  composition and  a transition from intensive herding management to  more extensive forms."And lastly, In  respect   to livestock rearing,  the fundamental  question  is whether  the herd is  an intrinsic value  for  a  pastoralist  or  a  market  commodity.  Certainly  and  unsurprisingly, the market factor  has increasing importance."

Lol I know you won't read all of this! But OMG when I copy and pasted it, it was all spread out and spaced way too many times, so I had to spend like 30 minutes getting it to this format!

the correct answer is "pioneers carried all of their possessions on long and dangerous trails".

the first wave of pioneers travelled in 1842. they were merely 100 people. the next year that sum climbed to 1000 men, women, and children. these people travelled around 2,000 miles to oregon in the hopes of a better life. although the first part of the trip didn't present many obstacles, as time and miles went by they learnt that threat came from simple things, like becoming ill due to unclean water or bad food.

the weather didn't much, as wagons couldn't protect them from storms. as they travelled through the desert, the intense heat caused wood to shrink. their own lips abscessed and split because of the dry air. the only cure for this was to rub axle grease on their lips.

even crossing rivers was dangerous. sometimes wheels were damaged by unseen rocks on shallow water. mud didn't much either. pioneers were afraid of indian attacks, but there aren't many records of fights between pioneers and native americans. accidents happened because of negligence, exhaustion, guns, and bad weather.

history says that 1 of 10 pioneers who travelled to oregon didn't survive the journey. diseases spread fastly because they didn't have doctors and medical care was ofently improvised. one of the most deadly diseases they came upon was cholera, which became a worldwide pandemia.