Here is a review of some important events in world history in 2015:
Paris Terror Attacks: On November 13, 2015, a series of terrorist attacks occurred in Paris, France, resulting in the death of 130 people and injuring hundreds.
Greek Debt Crisis: In 2015, the Greek economy experienced a deep recession and faced difficulties in repaying its external debt, ultimately leading to a tense situation with the European Union.
Expansion of ISIS: In 2015, ISIS continued to grow in Syria and Iraq, gaining control over extensive territories and resources, posing a threat to the surrounding regions.
European Migrant Crisis: In 2015, a large number of refugees poured into Europe from the Middle East, triggering a migrant crisis in Europe.
Legalization of Same-Sex Marriage in the United States: On June 26, 2015, the Supreme Court of the United States ruled that same-sex marriage is recognized and legalized nationwide.
These events were significant in world history in 2015 and had a profound impact on the global situation and the people of various countries.