The Khmer Rouge did bad things for a long time.
In 1977, soldiers from Vietnam came to Cambodia to help people fight against Pol Pot and the Khmer Rouge.
The Vietnamese took over the government and made things calmer, but there was still fighting and people had to leave their homes.
In 1989, the Vietnamese soldiers left.
In 1991, they made an agreement that allowed everyone to vote in elections, and the United Nations watched to make sure it was fair.
Prince Sihanouk became the king, but the government was more like a democracy where people vote. Things got better with the economy.
After World War I, the Ottoman Empire broke up, and new countries were made in the Middle East and the Balkans, but they weren't very stable.
One big problem was the fighting between Israel and the Palestinians.
The Zionist movement became popular in the 1890s because of something called the Dreyfus Affair.
Theodore Herzl thought that the Dreyfus Affair showed that Jewish people couldn't fit into European society.
In 1897, Herzl had a meeting called the First Zionist Congress where he said that Jewish people should have their own country.
Zionists wanted to create a country in Palestine, where their ancestors used to live.
At that time, Palestine was part of the Ottoman Empire, and most of the people living there were Arab Muslims.
Zionists thought that Jewish people would be safe from being treated badly if they had their own country.
In 1917, the British government made the Balfour Declaration, saying they wanted to help create a "national home" for Jewish people in Palestine.
Arthur James Balfour, who was in charge of foreign affairs for Britain, promised to help create a Jewish national home in Palestine.
He said they would make sure that the people who already lived in Palestine who weren't Jewish would still have their rights.
He also said they would make sure that Jewish people in other countries would still have their rights.
T.E. Lawrence, also known as "Lawrence of Arabia," had also promised some Arab people that they could have their own country.
The British wanted Arab people to fight against the Ottoman Empire during World War I so they could win the war.
The Arab people didn't trust the British, even though the Balfour Declaration said they would protect their rights.
After World War I, Britain took control of the Middle East.
Zionists started moving to Palestine from Europe and other places in the Middle East.
The Arab people protested because they were losing their land and their way of life because of the people moving in.
The Holocaust made people around the world feel sorry for the Jewish people who had survived, so more people started moving to Palestine.
Britain gave the problem to the UN General Assembly.
In 1948, the UN decided to split Palestine into Jewish and Arab areas, and the Jewish area became Israel.
Right away, there was a war between Israel and the Palestinians, who were helped by Arab countries.
Soldiers from Syria, Jordan, Lebanon, and Iraq attacked Israel.
After some fighting, the Israeli army won against the Arab soldiers, and they stopped fighting for a while.
About 400,000 Palestinians had to leave their homes and became refugees.
In 1956, Israel, helped by France and Great Britain, attacked Egypt's Sinai Peninsula to take back the Suez Canal, which Egypt had taken over.
Other countries protested, so the soldiers from Israel and their friends had to leave Egypt.
In the 1967 Six-Day War, Israel fought against Egypt, Jordan, and Syria and won the Gaza Strip, the West Bank and East Jerusalem, and the Golan Heights.
In the 1973 Yom Kippur War, Israel fought off a surprise attack from Egypt and Syria.
After 30 years of fighting, the president of the United States, Jimmy Carter, helped the leaders of Israel and Egypt make a peace agreement called the Camp David Accords.
The Camp David Accords was a peace agreement between Menachem Begin of Israel and Anwar Sadat of Egypt.
The Palestinians and some Arab countries didn't like the peace treaty and didn't want it.
The Palestinian Liberation Organization (PLO) and Yasser Arafat wanted the land that had been taken from them back and wanted Palestine to be its own country.
In the 2000s, it became even harder to make peace because the Palestinians split into two groups: Fatah (in the West Bank) and Hamas (in Gaza).
Israel started checking people crossing the borders of the West Bank and Gaza more carefully for security reasons, which made the Palestinians angry and hurt their economy.
There was still fighting, with Palestinians shooting bombs at Israeli towns and Israel attacking people they thought were dangerous.
From 2000 to 2014, about 8,1668,166 people died in the fighting, including 7,0657,065 Palestinians and 1,1011,101 Israelis.
Egypt used to be controlled by the Ottoman Empire.
Egypt became its own kingdom in 1922, but the British still had some power.
In 1936, Egypt and Britain made an agreement that gave Egypt more freedom, but British soldiers could stay to protect the Suez Canal.
After World War II in 1945, Egypt helped start the Arab League, which grew to have 22 countries.
In 1952, General Gamal Abdel Nasser and Muhammad Naguib kicked out the king and made Egypt a republic.
Naguib became the first president, and Nasser became the second.
Nasser wanted all Arab countries to be united.
Nasser's ideas for Egypt were a mix of Islam and socialism.
He took land from rich people and gave it to poor people to farm together.
He took over important businesses, including banks that were owned by people from other countries.
Nasser took control of the Suez Canal, which caused problems with other countries.
The Suez Canal was built by Egyptian workers and with money from France between 1859 and 1869. France was supposed to control it for 99 years.
Nasser took control of the Suez Canal to stop other countries from taking advantage of Egypt.
Britain also cared about the canal and controlled it with the French.
In 1956, Nasser took the canal, and Israel attacked Egypt because Britain and France asked them to.
Britain and France took over the area around the canal, saying they were making sure everyone followed the rules of a cease-fire.
The United States and the Soviet Union didn't like what Britain and France were doing and used the United Nations to help everyone make an agreement.
Soldiers from other countries left, and the canal became a waterway that everyone could use, but Egypt controlled