Which invention made moving crops and products to market much easier and more efficient?

Explain the importance of quantitative methods in business? What is A slowdown of the economy? What resources does the US export? Laissez faire style of leadership? Public sector aims? How does industry level price elasticity of demand shape the opportunities for making profit in an industry? What are the assumptions of business ethics? What political factors affect Oxfam? How Market environment challenge pick n pay? How is tundra important to economony? What is export-import economic model? What is meant by the term trade? How did government seek to guarantee profits for businesses engaged in war production? How did songhai get rich? If a demand curve shifts rightward this means? Why are budget deficits and trade deficits sometimes called the twin deficits? How can specialization be a detriment to a country's economy? What does absolute advantage have to do with making economic choices? What can be measure from current market prices? What did real estate prices do during the stagflation of the 1970s Does anyone have a graph?