Wow! It's just rare...seeing my country mentioned in a course...I think this is the first time! XD

why not constructs engines, since you can construct a building and build a building, construct an engine and build an engine?

How will I ever learn that countries "builds", they don't "build", engines... Because a country is only one person - but not in my head. :)

'manufactures' would be a better English word in this context.