Find out the correct options from the following pairs related to geostrategic idea of Mackinder :
|
Year |
Concept |
|
|
(a) |
1904 |
Pivot area |
|
(b) |
1919 |
Strategic Heartland |
|
(c) |
1943 |
Midland basin |
1
(a), (b) and (c)
2
(a) and (b) only
3
(a) and (c) only
4
(b) only