Advertisement Upgrade to remove ads


are taxes added to the price of goods or services that are purchased from another country.


are goods or services that a country purchases (receives) from another country.


are the number limit on how many items or a particular product can be purchased from another country.


is to focus on economic activities best suited for available resources.


are goods or services that a country sells (sends) to another country.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording