Dag was a man who helped the world. 

Dag was a leader from Sweden. 


Dag Hammarskjöld was a leader from Sweden. 

Dag worked hard to make the UN better. He helped start the first peace-keeping forces. These are groups that help keep peace in different lands. He also helped solve many global crises. One time, he helped free pilots from China. In 1961, he went to the Congo to help stop a war.
On his trip to the Congo, his plane crashed. He died in the crash. Because of his work, he won the Nobel Peace Prize. He is the only person to win this prize after they die. Many people still honor his memory today. 
Dag Hammarskjöld was a famous leader from Sweden. 

In 1953, Dag became the second Secretary-General of the United Nations. 
Dag worked very hard to improve how the United Nations functioned. He wanted the staff to feel happy and helpful. He visited many different departments to meet the workers. He even shared the private elevator with others so everyone could use it. He also helped create a quiet meditation room at the UN headquarters. This room was a place where people could be silent regardless of their religion. 
His time as a leader included many difficult moments. In 1960, the Congo asked for help to stop a crisis. 
In September 1961, Dag was traveling to help negotiate a peace deal. He was on a plane headed to the Congo. Sadly, his plane crashed near Ndola in Northern Rhodesia. All 16 people on the plane died in the crash. Because of his great work for peace, he was given the Nobel Peace Prize. He is the only person to receive this prize after they have died. 
Dag Hammarskjöld was a Swedish economist and diplomat. He served as the second Secretary-General of the United Nations. This position is the highest administrative role in the UN. He held this post from April 1953 until September 1961. 

Hammarskjöld's path to leadership began with rigorous academic study. He grew up in Uppsala and attended Uppsala University. By January 1930, he had earned degrees in philosophy and law. He began his career as an assistant for an unemployment committee. Later, he earned a doctorate from Stockholm University. He wrote a thesis titled "The Spread of the Business Cycle." 
His election to the United Nations was a complex process. The previous Secretary-General, Trygve Lie, resigned in 1952. The Security Council struggled to find a replacement. They first voted for Lester B. Pearson of Canada. However, the Soviet Union used a veto to stop his appointment. In March 1953, French representative Henri Hoppenot suggested Hammarskjöld. The major powers wanted a leader who focused on administration. They believed he would be an unobtrusive technician. The Soviet Union even called him "harmless." 
Once in office, Hammarskjöld worked to transform the UN organization. He wanted to improve morale among the staff. He visited every department to shake hands with workers. He even gave up his private elevator for general use. He established a secretariat of 4,000 administrators. He also created a meditation room at the UN headquarters. This room allowed people to be silent regardless of their religion. 
Hammarskjöld was a pioneer of international peacekeeping. He presided over the creation of the first UN peacekeeping forces. These were the UNEF in Egypt and the ONUC in the Congo. In 1955, he visited China to negotiate for US pilots. In 1956, he helped during the Suez Crisis. He is also credited with allowing the Holy See to participate in the UN.
His work in the Congo became highly controversial. In 1960, the new nation of Congo requested UN aid. Hammarskjöld made four trips to the region to help. The Soviet Union criticized his actions during the Congo Crisis. They felt his efforts toward decolonization were insufficient. The Soviets even demanded he resign. They proposed a "troika," which was a three-man directorate. 
Tragedy struck during his second term in 1961. Hammarskjöld was traveling to negotiate a cease-fire in the Congo. He was on a Douglas DC-6 aircraft. On September 18, 1961, the plane crashed near Ndola. All 16 people on board died in the accident. The exact causes of the crash remained unclear for a long time. His death caused a succession crisis at the United Nations. Because there was no official line of succession, the Security Council had to vote for a new leader.
Despite the controversy in some regions, his legacy is significant. He is the only person to receive the Nobel Peace Prize posthumously. This means he was awarded the prize after his death. In the West, he was called a great statesman. US President John F. Kennedy called him the greatest of his century. 
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