How did the invention of mechanical farming equipment affect the american economy in the mid-1800s? it made land travel slower. it made land travel faster. it decreased economic productivity. it increased economic productivity. i need the answer asap !

It would be D as well as making food faster, and other things like the cotton gin helped produce cotton faster.

Your answer is the last one.  It increased economic productivity

A, c, and d are the answers

Urban growth invariably feeds increased commercialization and industrialization. it requires continually expanding land areas. when urbanization rates are high, and countries do not have the institutional and managerial capacities or economic wherewithal to manage such rapid growths, they exert intense pressure on the types and nature of the resulting settlements. they contribute to the development of overcrowded slums and shanty towns without adequate essential services and necessary infrastructure.-by asit k. biswas and cecilia tortajada