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Chapter 17
| Country | UN member |
Capital | Chief of state | Legislative body | Government type |
| Saint Lucia | Yes | Castries | Queen | Parliament (bicameral) | Parliamentary Democracy. |
| Saint Vincent and the Grenadines | do. | Kingstown | do. | House of Assembly (unicameral) | Do. |
| Samoa | do. | Apia | Chief of State | Legislative Assembly (unicameral) | Do. |
| San Marino | do. | San Marino | Co-Chiefs of State (Captains Regent) | Grand and General Council (unicameral) | Republic. |
| Sao Tome and Principe | do. | Sao Tome | President | National Assembly (unicameral) | Do. |
| Saudi Arabia | do. | Riyadh | King and Prime Minister | Consultative Council | Monarchy. |
| Senegal | do. | Dakar | President | Parliament (bicameral) | Republic. |
| Serbia | do. | Belgrade | do. | National Assembly (unicameral) | Do. |
| Seychelles | do. | Victoria | do. | do. | Do. |
| Sierra Leone | do. | Freetown | do. | Parliament (unicameral) | Constitutional Democracy. |
| Singapore | do. | Singpore | do. | do. | Parliamentary Republic. |
| Slovakia | do. | Bratislava | do. | National Parliament (unicameral) | Parliamentary Democracy. |
| Slovenia | do. | Ljubljana | do. | Parliament (bicameral) | Parliamentary Republic. |
| Solomon Islands | do. | Honiara | Queen | National Parliament (unicameral) | Parliamentary Democracy. |
| Somalia | do. | Mogadishu | Transitional Federal President | National Assembly (unicameral) | No permanent National Government; transitional Parliamentary Federal Government. |
| South Africa | do. | Pretoria | President | Parliament (bicameral) | Republic. |
| Spain[1] | do. | Madrid | King | General Courts or National Assembly (bicameral) | Parliamentary Monarchy. |
| Sri Lanka | do. | Colombo | President | Parliament (unicameral) | Republic. |
| Sudan | do. | Khartoum | do. | National Legislature (bicameral) | Government of National Unity (GNU). |
| Surinam | do. | Paramaribo | do. | National Assembly (unicameral) | Constitutional Democracy. |
| Swaziland | do. | Mbabane | King | Parliament (bicameral) | Monarchy. |
| Sweden | do. | Stockholm | King | Parliament (unicameral) | Constitutional Monarchy. |
| Switzerland | do. | Bern | President | Federal Assembly (bicameral) | Formally a Confederation but similar in structure to a Federal Republic. |
| Syria | do. | Damascus | do. | People’s Council (unicameral) | Republic under an authoritarian military-dominated regime. |
| Tajikistan | do. | Dushanbe | do. | Supreme Assembly (bicameral) | Republic. |
| Taiwan | No. | Taipei | do. | Legislative Yuan (unicameral) | Multiparty Democracy. |
| Tanzania | Yes. | Dar es Salaam | do. | National Assembly (unicameral) | Republic. |
| Thailand | do. | Bangkok | King | National Assembly (bicameral) | Constitutional Monarchy. |
| Timor-Leste | do. | Dili | President | National Parliament (unicameral) | Republic.|- |
- ↑ The Law of Succession, July 27, 1947, declared that Spain was constituted a Kingdom
