The 2040s (pronounced "twenty-forties" and/or "two-thousand (and) forties") was a decade of the Gregorian calendar. It began on January 1, 2040, and ended on December 31, 2049

Social/political relations and crises

Wars

• War of 2040 (March 16, 2040 – June 20, 2043) – the war was fought due to the Socialist Republic of Iran invading Iraq. It seemed like Iran would win the war at first. But after the Battle of Baghdad, the United States decided to enter the war on the side of Iraq.
• Urgrestanian War for Independence (April 24, 2042 – January 20, 2045) –
• Russo-North Japanese War (December 14, 2044 – February 28, 2047) –
• Ukranian-Polish War (August 31, 2047 - November 27, 2053) –
• World War III breaks out on August 21, 2049