Constitution of Nigeria in the context of "National Assembly (Nigeria)"

Nigeria is a federation of 36 states, each of which is a semi-autonomous political unit that shares power with the federal government as enumerated under the Constitution of the Federal Republic of Nigeria. In addition to the states, there is the Federal Capital Territory (FCT), in which the capital city of Abuja is located. The FCT is not a state, but a territory of the federal government, governed by an administration headed by a minister. Each state is subdivided into local government areas (LGAs). There are 774 local governments in Nigeria. Under the Nigerian Constitution, the 36 states enjoy substantial autonomy but are not sovereign entities, as ultimate authority lies with the federal government. Amendments to the constitution can be proposed by the National Assembly, but for an amendment to be valid, it must be approved by a two-third majority of the 36 state legislatures, as required under Section 9 of the 1999 Constitution of Nigeria.

The federal government of Nigeria is composed of three distinct arms: the executive, the legislative, and the judicial, whose powers are vested and bestowed upon by the Constitution of the Federal Republic of Nigeria. One of the primary functions of the constitution is that it provides for separation and balance of powers among the three branches and aims to prevent the repetition of past mistakes made by the government. Other functions of the constitution include a division of power between the federal government and the states, and protection of various individual liberties of the nation's citizens.

Nigerian politics take place within a framework of a federal and presidential republic and a representative democracy, in which the president holds executive power. Legislative power is held by the federal government and the two chambers of the legislature: the House of Representatives and the Senate. The legislative arm of Nigeria is responsible for and possesses powers to legislate laws. Together, the two chambers form the law-making body in Nigeria, called the National Assembly, which serves as a check on the executive arm of government. The National Assembly of Nigeria (NASS) is the democratically elected body that represents the interests of the Federal Republic of Nigeria and its people, makes laws for Nigeria, and holds the Government of Nigeria to account. The National Assembly (NASS) is the nation's highest legislature, whose power to make laws is summarized in chapter one, section four of the 1999 Nigerian Constitution. Sections 47–49 of the 1999 Constitution state, among other things, that "There shall be a National Assembly (NASS) for the federation which shall consist of two chambers: the Senate and the House of Representatives." The Economist Intelligence Unit rated Nigeria a "hybrid regime" in 2019. The federal government, state, and local governments of Nigeria aim to work cooperatively to govern the nation and its people. Nigeria became a member of the British Commonwealth upon its independence from British colonial rule on 1 October 1960.

The Western Region of Nigeria was established as one of three regions united in the Federation of Nigeria as laid out in the Lyttleton constitution adopted in 1954. On 27 May 1967 1967 the region was divided into the Western State (Nigeria) and Lagos State.

Chief Obafemi Awolowo was leader of the Action Group and served as Premier of the Western Region from 1954 to 1959.

The National Assembly of the Federal Republic of Nigeria is a bicameral legislature established under section 4 of the Constitution of Nigeria The body consists of 109 members of the Senate and 360 members from the House of Representatives; There are three senators from each of the States of Nigeria and one senator representing the Federal Capital Territory and single-member district, plurality voting in the House of Representatives.

The Nigerian Armed Forces (NAF) are the military forces of Nigeria. The forces consist of three service branches: the Nigerian Army, Nigerian Navy, and Nigerian Air Force. The President of Nigeria functions as the commander-in-chief of the armed forces, exercising his constitutional authority through the Ministry of Defence, which is responsible for the management of the military and its personnel. The operational head of the AFN is the Chief of Defence Staff, who is subordinate to the Nigerian Defence Minister. With a force of more than 230,000 active personnel, the Nigerian military is one of the largest uniformed combat services in Africa.

The Nigerian Armed Forces were established in 1960 as the successor to the combat units of the Royal West African Frontier Force stationed in the country, which had previously served as the British Empire's multi-battalion field force, during Nigeria's protectorate period. Since its creation, the Nigerian military has fought in a civil war – the conflict with Biafra in 1967–70 – and sent peacekeeping forces abroad, both with the United Nations and as the backbone of the Economic Community of West African States Cease-fire Monitoring Group (ECOMOG) in Liberia and Sierra Leone. It has also seized power twice at home (1966 & 1983). Nigeria's armed forces would continue to remain an active element in combat operations throughout the African continent over the proceeding decades, with notable engagements including its 2017 involvement as part of the ECOWAS military intervention in the Gambia.

The First Republic was the republican government of Nigeria between 1963 and 1966 governed by the first republican constitution. The country's government was based on a federal form of the Westminster system. The period between 1 October 1960, when the country gained its independence, and 15 January 1966, when the first military coup d’état took place, is also generally referred to as the First Republic. The first Republic of Nigeria was ruled by different leaders representing their regions as premiers in a federation during this period.