Bhutan:
about half the size of Indiana
Bolivia:
slightly less than three times the size of Montana
Bosnia and Herzegovina:
slightly smaller than West Virginia
Botswana:
slightly smaller than Texas
Bouvet Island:
about 0.3 times the size of Washington, DC
Brazil:
slightly smaller than the US
British Indian Ocean Territory:
about 0.3 times the size of
Washington, DC
British Virgin Islands:
about 0.9 times the size of Washington, DC
Brunei:
slightly smaller than Delaware
Bulgaria:
slightly larger than Tennessee