In 1949, some political developments in Sri Lanka were adverse for Tamil people of Sri Lanka. Many Tamils people lost their citizenship of being citizens of Sri Lanka. Under an agreement between the governments of India and Sri Lanka, about 40% of these Tamils could get back their citizenship. Many others had to shift to India. These developments brought the two groups of the Tamil people of Sri Lanka closer. By 1990s, most of the Tamil people had got back their citizenship.