Heads of states

Standard Monarchy - The Government's leader is a Prime Minister, who has been elected to run the Government. The Monarchy is head of state. The Monarchy can also dissolve the Parliament if they feel it is necessary, decline any laws made by the prime minister and can declare war without Parliament's consent. This does not usually happens though. The Head of State passes on to the closest family member. Quite a few of these monarchies may be head of state of numerous countries, most notably the monarchs of the United Kingdom, Denmark, Norway, Netherlands and Spain.

Non Executive Monarchy - The Monarchy does not have much power. They are not head of state but can intervene with the Government and the Military forces. The Prime Minister is elected in but the monarchy is handed down through to the closest family member.

Voted in Monarchy - This only occurs in one country. The Monarchy is very powerful running both the government and being head of state. You have to seek approval from the King to enter the country. When the King dies a new King is voted in through the selected people by the previous Monarchy.

Absolute Monarchy - A Monarch who has power over all of the the country, government and the military forces. When the current Monarch dies their child becomes the new monarch.

Semi - Presidential Systems - These Countries have both a President and a Prime Minister. The Prime Minister runs the Government while the President is head of state. Both are voted in. The President can get ride of the Prime Minister if he feels that the Prime Minister is not fit for rule and can nominate a Prime Minister of his choice. In some countries the President can also be the Prime Minister

Presidential Systems - These countries are run by a President, who has been voted in. The President is head of state and runs the Government

Ceremonial Presidency - Countries who have a President but there Prime Ministers are head of state and head of the Government. 

Single Party States - There is one party who rule the country as head of state and run the Government. They usually have a leader who stays until they die but sometimes a knew one can be chosen. When the current leader dies a knew leader is voted in, but it usually is the son of the previous President who becomes knew President.

Countries with a Standard Monarchy (does not include countries that are ruled over by other countries)

Andorra
Belgium
Bhutan
Brunei
Cambodia
Denmark
Jordan
Kuwait
Lesotho
Liechtenstein
Luxembourg
Malaysia
Monaco
Morocco
Netherlands
Norway
Saudi Arabia
Spain
Thailand
Tonga
United Kingdom

Countries with a Non Executive Monarch

Japan
Sweden

Countries with a Voted in Monarch

Vatican City

Countries with a Absoulate Monarchy

Oman
Qatar
Swaziland
United Arab Emirates

Countries with a Semi President State

Algeria
Armenia
Burkina Faso
Cape Verde
Democratic Republic of the Congo
Djibouter
East Timor
Egypt
France
Georgia
Guyana
Haiti
Madagascar
Mali
Mauritania
Niger
Palestine
Portugal
Romania
Russia
Senegal
Sri Lanka
Syria
Taiwan
Tajikistan
Tunisia
Ukraine

List of countries with a Presidential System

Afghanistan
Angola
Argentina
Benin
Bolivia
Brazil
Burundi
Chile
Colombia
Comoros
The Republic of the Congo
Costa Rica
Cyprus
Ecuador
El Salvador
Gambia
Ghana
Guatemala
Honduras
Indonesia
Keya
Liberia
Malawi
Maldives
Mexico
Nigeria
Panama
Paraguay
Philippines
Sierra Leone
South Sudan
Sudan
Switzerland
Turkmenistan
United States
Uruguay
Venezuela
Zambia
Zinbabwe

Countries with a Ceremonial Presidency

Austria
Bosnia and Herzegovina
Croatia
Ethiopia
Finland
Greece
Germany
India
Ireland
Italy
Libya
Nepal
Malta
Montenegro
Pakistan
Romania
Serbia
Slovakia
Slovenia
Turkey

Single Party States

China
Cuba
Eritea
Laos
North Korea
Vietnam