https://en.wikipedia.org/wiki/Asiatic_lion#Distribution_and_habitat
The advent of firearms led to their
extinction over large areas. By the late 19th century, Asiatic lions had been eradicated in
Turkey.
[17] In Iran, lions served as the
national emblem and appeared on the country's flag. Some of the last lions were sighted in 1941 between
Shiraz and
Jahrom in the
Fars Province. In 1944, the corpse of a lioness was found on the banks of the
Karun river in Iran's
Khuzestan Province. In 1963, the last pride of five Persian lions was hunted in the
Dasht-i Arzhan of Fars Province. The national newspapers and media "celebrated" the killing of these lions with pictures and fanfare. The diminished pride consisted of a female with four cubs that inhabited a cave. The male had been shot already. The female was shot on the spot, and the cubs were taken as trophies. No subsequent sightings have been reported from Iran.
[18]
In India, Asiatic lions once ranged to the state of
Bengal, but declined under heavy hunting pressure.
[9] In the early 19th century, they were found in north-western and central India in
Hariana,
Khandesh (in modern-day
Maharashtra),
Rajasthan,
Sindh, and eastward as far as
Palamu and
Rewa, Madhya Pradesh.
[19] Severe hunting by
Indian royalties and
colonial personnel led to a steady and marked decline of lion numbers in the country.
[15] Asiatic lions were exterminated in
Palamau by 1814, in
Baroda, Haryana and
Ahmedabad in the 1830s, in
Kot Diji and
Damoh in the 1840s. During the
Indian Rebellion of 1857, a
British officer shot 300 lions. The last lions of
Gwalior and
Rewah were shot in the 1860s. Until 1880, no lion survived in
Guna,
Deesa and
Palanpur, and only about a dozen lions were left in the
Junagadh district. By the turn of the century, they were confined to the Gir Forest and protected by the
Nawab of Junagadh in his private hunting grounds.
[9]
One lion was killed near
Allahabad in 1866.
[19] The last lion of
Mount Abu was spotted in 1872.
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So, apparently the lions were all over the place, before being hunted down and terminated. Tigers did not seem to pose a problem for Asiatic lions!