Arctic Ocean:
slightly less than 1.5 times the size of the US
Argentina:
slightly less than three-tenths the size of the US
Armenia:
slightly smaller than Maryland
Aruba:
slightly larger than Washington, DC
Ashmore and Cartier Islands: about eight times the size of The Mall in Washington, DC
Atlantic Ocean:
slightly less than 6.5 times the size of the US
Australia:
slightly smaller than the contiguous 48 states of the US
Austria:
slightly smaller than Maine
Azerbaijan:
slightly smaller than Maine
Bahamas, The:
slightly smaller than Connecticut