Final answer:
Japan, Canada, and Bangladesh have parliamentary governments, whereas the United States has a presidential system. In parliamentary systems, the executive and legislative branches are combined, and the head of state is usually a prime minister.
Step-by-step explanation:
Among the options given, the countries that have a parliamentary government system are Japan, Canada, and Bangladesh. The United States operates under a presidential system, making it the incorrect choice. In a parliamentary system, the executive and legislative branches are interconnected, and the political head of state, typically called the prime minister, is selected from the legislature. This prime minister may also act as an advisor to a symbolic head of state, often a monarch. Countries like Japan have a prime minister appointed by their national legislature, known as the Diet, while in Canada and Bangladesh, the prime minister is selected by the majority party to lead the government. The parliamentary system is seen in many democracies worldwide and is especially common in countries formerly part of the British Empire.