.

Abyssinia,

.

Afghanistan,

.

Africa,

,

,

,

,

.

Africa, Central,

,

,

.

Africa, South,

,

,

.

Africa, West Coast,

,

,

,

,

.

Agricola,

.

Alaska,

,

,

.

Albert Nyanza,

.

Albuquerque, Alphonso d',

.

Alexander the Great,

.

Alexandria,

,

.

Alfred the Great,

.

Almagro, Diego de,

.

Almeida, Francisco,

.

Almeida, Lorenzo,

.

Alvarado, Pedro de,

,

.

Amazon,

.

America (Central),

,

,

,

.

America (North),

,

,

,

,

,

.

America (South),

,

,

,

,

,

.

Amundsen, R.,

.

(of Xenophon),

.

Anaximander,

.

Andes,

,

.

Antarctic regions,

,

,

.

Arab explorers,

,

.

,

.

Arctic regions,

,

,

,

,

,

,

,

.

Arculf,

.

Argonauts,

.

Auckland,

.

,

,

,

.

Babylonia,

,

.

Back, Sir George,

,

.

Baffin, William,

.

Baffin's Bay,

.

Bagdad,

.

Bahamas,

.

Baker, Sir Samuel,

.

Balboa, Vasco Nunez de,

.

Balbus,

.

Bangweolo, Lake,

.

Banks, Sir Joseph,

,

,

,

.

Barents, William,

.

Bass, George,

.

Baudin, Nicholas,

.

Behring, Vitus,

.

Behring's Strait,

,

.

Benjamin of Tudela,

.

Black Sea,

.

Bogle, George,

.

,

.

Boothia,

.

Borneo,

.

Botany Bay,

,

.

Brandon's Isle,

.

Brazil,

,

.

British Columbia,

,

.

British Isles,

,

,

,

,

.

Bruce, James,

.

Burke, R. O'Hara,

.

Burton, Sir Richard,

.

Button, Sir Thomas,

.

Cabot, John and Sebastian,

.

Cabral, Pedro,

.

Cadamosto, Luigi,

.

Caillé, Réné,

.

Calicut,

,

,