Course Library assignment

prepare a paper of at least 400 words in toital the document has to be in APA style. answer all these questions. 

• Why does the United States still use the English system? 
• When was the last attempt to officially move to the metric system? 
• Does the use of English measurement units put U.S. companies at a disadvantage when competing on international contracts? 
• How has software solved the challenge? 
• Give examples of engineering software that resolves this challenge.