
Source: PeterHermesFurian / iStock via Getty Images
26. Lesotho
> Joined: Oct. 4, 1966
> Population: 2,159,070
> System of government: Unitary Westminster monarchy

Source: goralikus / iStock via Getty Images
27. Barbados
> Joined: Nov. 30, 1966
> Population: 287,710
> System of government: Unitary Westminster republic

Source: Rainer Lesniewski / iStock via Getty Images
28. Mauritius
> Joined: March 12, 1968
> Population: 1,266,060
> System of government: Unitary Westminster republic

Source: Rainer Lesniewski / iStock via Getty Images
29. Eswatini
> Joined: Sep. 6, 1968
> Population: 1,172,370
> System of government: Unitary absolute monarchy

Source: Rainer Lesniewski / iStock via Getty Images
30. Nauru
> Joined: Nov. 1, 1968
> Population: 10,870
> System of government: Unitary parliamentary republic with an executive presidency
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