Compléter Wide Angle 5 Unit 9.1Version en ligne Structures with infinitive par Guadalupe Soto Reyes 1 allow allows want make want lets Investment is the use of resources to more money or goods . Businesses to spend a certain amount of money or other resources in order to grow the business . They plan to construct new buildings , buy machinery , and purchase supplies , all of which costs money . Economists often governments to build roads and bridges as a way to create jobs and make the country more productive . Individuals often take classes or training because it them to develop better skills . The development of better skills often workers earn more money . If they learn to do new things , they can often get better jobs . To grow , businesses need to replace damaged or worn - out equipment and adopt new technology . New technology will them to produce more . - adapted from Oxford Encyclopedia of Economic History , edited by Joel Moy r