The Great Leap Forward (1958 - 1962): As President Mao wanted to improve China's development rapidly, he launched a campaign to help increase industrial and agricultural production. However, with the backyard steel production and large famines, it caused the death of 30 million people, indicating that it was a major setback for China both socially and economically.

The Cultural Revolution (1966 - 1976): Under this revolution, the government paralyzed the research and educational systems, limiting the probability of having contact with anything that represented Western ideologies. Many intellectuals were killed or sent to labor camps.

Economic Reforms (1978 - 1980s): After Deng Xiaoping became president, he implemented his four modernizations program that included agriculture, industry, defense, and science. Furthermore, China carried out the "Open Door Policy," which helped the United States and China establish diplomatic relationships. Lastly, the economic reforms from the government led to less control over businesses and land ownership, contributing to China's economic growth.

Tiananmen Square Protest (1989): The protest at the plaza demonstrated the students' determination to bring attention to freedom and democracy. However, some people sacrificed throughout the process.

One Child Policy (1979 - 2015): The policy was introduced to help control rapid population growth. Families that were found with multiple children were fined or faced other consequences. Yet, with their preference for having boys, there was a significant difference in baby gender ratios.

Decolonization (1945 - 1970): After World War II, Britain no longer had the wealth or strength to manage its overseas empires; therefore, many countries started to gain their independence one after another. This shows a shift in global powers and how Britain was very unstable economically and politically.

The Troubles (1969): In Northern Ireland, the Catholic citizens believed that they were treated unfairly in many different ways, so they started protesting against the government. However, when the British soldiers came to restore order, there was a lot of violence between the government and the citizens, leading to more violence in other countries and a deep division between the Northern Irish and the UK.

Economic Reforms (1979-1990): Margaret Thatcher was elected as the first female Prime Minister and introduced free-market policies to help revitalize the economy and increase national GDP.

Financial Crisis (2008 - 2009): After the stock market crashed in 2008, there was a significant decrease in the UK's GDP. This caused many people to be unemployed and the productivity to decrease.

Brexit (2020): Great Britain officially withdrew from the European Union because of the influx of migrants from other EU countries and many other reasons.

Coup Overthrow (1953) After Iran decided to nationalize their oil industry, the British and US intelligence overthrew Prime Minister Mossaddegh through a coup. This helped the Shah to return to power.

Iranian Revolution (1979): In this revolution, the citizens were unhappy with the Shah's governance and eventually replaced him with a new leader, Ayatollah Khomeini. This caused their relationship with Western powers to collapse.

Iran-Iraq War (1980 - 1988): Iraq attacked Iran because Iraq wanted its land and natural resources. However, Iran fought back, and neither country won. This caused a lot of damage, which both countries suffered hugely. A cease-fire was declared after the UN helped with its negotiations.

Student Protests (1999): Many pro-democracy students protested against the government because of corruption, repression, and poor governance. More than 1,000 students were arrested, but this indicated a social movement that was not successful.

Economic Situation (2015): For many years, Iran faced a lot of restrictions because of their nuclear program. Thus, Iran signed the JCPOA to help improve their economy.

Oil Discovery (1976): As they found a super oil field in the Bay of Campeche, this fueled a massive economic boom in their country. It increased their GDP, job creation, and export revenue.

Nigeria's Independence (1960): After many years of colonization by the British, they finally gained their independence, and Prime Minister Sir Abubakar Tafawa Balewa started to lead the government.

Biafran War (1967 - 1970): The civil war between Nigeria and the Republic of Biafra started because of the significant political and ethnic unrest after its independence. Thus, it led to the death of about 2 million people and unresolved tensions. Nigeria was still politically unstable.

Ethnic Violence (2002): Ethnic violence erupted in Lagos, which caused over 100 deaths and more conflicts between the two ethnic groups.

Boko Haram Uprising (2009 - now): Since the north and south parts of the country were developed differently, many Northern Nigerians felt ignored by the government and decided to fight back. They started bombing infrastructures and killing people, but their problems still haven't been solved till today. This is a huge humanitarian problem for Nigeria.

Presidential Elections (2011): Vice-President Goodluck Jonathan won the presidential elections. Their GDP became the largest economy in Africa, surpassing South Africa and Egypt.

The Cold War (1950s): After World War 2, the Soviet Union and the USA became to two largest global powers and started to compete over who had the largest influence around the world.

Cuban Missile Crisis (1962): When Russia placed nuclear missiles in Cuba, it almost started World War III. This proves how powerful Russia was in its nuclear technology.

Collapse of the Soviet Union (1991): Russia became an independent state and formed the Commonwealth of Independent States.

Putin Wins Election (2000 - now): After President Putin won the election, he aimed to consolidate state powers and turned the government into a more authoritarian one.

Invasion of Ukraine (2022 - now): As Russia tried to take Ukraine back under its influence, this started another war and led to many consequences.