Long ago, two lands became one.
Long ago, two lands were separate. 
In the north, people found oil. This helped their land grow. In the south, people also wanted change. They wanted to be free.
Finding oil near the border helped. It gave them a reason to work together.
In 1990, the two lands became one. They called this new land Yemen. They chose a city called Sanaa to be the capital.
Now, they share one flag. They also share one way to talk about their history. It was a big change for everyone.
For a long time, two separate lands lived side by side. The North was called the Yemen Arab Republic. The South was called the People's Democratic Republic of Yemen. 
They had different ways of life. The North had a king long ago. Later, it became a republic. The South was once ruled by the British. In the 1970s, the two sides fought a short war. They also fought again in 1979.
Things began to change in the late 1980s. Leaders found oil near the border. This gave them a reason to work together. In 1989, two leaders signed a unity plan. Their names were Ali Abdullah Saleh and Ali Salem al-Beidh.
On May 22, 1990, they became one country. They called it the Republic of Yemen.
But staying together was hard. In 1994, a civil war broke out. This was a sad time of fighting. 
In 1990, two separate lands became one single nation. Before this, the North was the Yemen Arab Republic. The South was the People's Democratic Republic of Yemen. 
The path to joining was not always easy. In 1972 and again in 1979, fighting broke out between the two sides.
Two main leaders helped make the union happen. Ali Abdullah Saleh led the North. Ali Salem al-Beidh led the South. 
After the union, the new country had many new parts. They created a unified parliament with 301 seats. 
Staying united proved to be a very hard job. In 1994, disagreements between leaders led to a civil war. This fighting was a sad time for the people. After the war, the North held much more power in the government. Because of this, some people in the South felt they were treated unfairly. Even today, some people in the South still wish to have their own separate state again.
The Yemeni unification was a major political event that occurred on May 22, 1990. On this date, two separate nations merged to form the Republic of Yemen. The first nation was the Yemen Arab Republic, commonly known as North Yemen. The second was the People's Democratic Republic of Yemen, known as South Yemen. This merger brought together two countries with very different histories and political systems.
To understand this union, one must look at the separate paths of the two nations. North Yemen became an independent kingdom after the Ottoman Empire dissolved in November 1918. Later, it moved from a monarchy to a republican government led by a military junta. South Yemen had a different experience under British colonial rule. The area was a British protectorate and later a colony. In 1967, a nationalist insurgency supported by the Soviet Union led to the British withdrawal. This left South Yemen as the only avowedly communist nation in the Middle East.
Before they could unite, the two nations experienced several periods of conflict. In October 1972, fighting broke out between the North and the South. North Yemen was supported by Saudi Arabia, while South Yemen was supported by the Soviet Union. This led to the Cairo Agreement on October 28, 1972, which first proposed a plan for unification. Another conflict occurred in early 1979. During this time, Southern forces reached the city of Taiz before withdrawing. North Yemen was supported by Saudi Arabia and Taiwan during these tensions. 
Economic interests eventually helped drive the two sides toward peace. In the late 1980s, oil exploration began near the border between the two countries. This area included the Marib Governorate in the North and the Shabwah Governorate in the South. The potential to exploit these resources encouraged both governments to seek agreements. In May 1988, they agreed to establish a Joint Investment Area for oil exploration. They also formed the Yemeni Company for Investment in Mineral and Oil Resources, or YCIMOR. These steps helped reduce tensions and moved the nations closer to a single identity.
In November 1989, leaders from both sides signed a draft unity constitution. Ali Abdullah Saleh represented the North, and Ali Salem al-Beidh represented the South. 
Merging the two nations required many practical changes to daily life. The two countries had different currencies, known as the rial in the North and the dinar in the South. In 1991, the dinar was withdrawn, and 26 rial were exchanged for one dinar. The new Republic of Yemen also adopted the North's name for the United Nations. It kept the South's system of administrative divisions, called governorates, or Muhafazah. Even the telephone calling code, +967, was taken from the North. The new nation also accepted all previous treaties and debts from both predecessor states.
However, the unification faced severe challenges shortly after it began. Political infighting within the new coalition led to a deterioration of security. In May 1994, a civil war broke out between the North and the South. Southern leaders attempted to secede by establishing the Democratic Republic of Yemen. This new state was not recognized by the international community. After fighting continued, Aden was captured in July 1994. Following the war, the political structure changed significantly. The presidential council was eliminated, and Ali Abdullah Saleh was elected President by Parliament in 1994.
Today, the legacy of the unification remains complex. While Yemen adopted a Western-style government with presidential elections, political friction persists. Some people in the South feel they have faced unfair treatment from the North. This has led to the rise of the South Yemen Movement, which seeks an independent southern state. In 2015, the country was again engulfed in a civil war. This conflict is described as a proxy war involving Saudi Arabia and Iran. The history of Yemeni unification shows how difficult it can be to merge two distinct societies into one.
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