The following are all events that took place in the year 1990, (30 years ago)
Smoking is banned on all cross-country flights in the United States.
The League of Communists of Yugoslavia votes to dissolve itself.
The National Assembly of Bulgaria votes to end one party rule by the Bulgarian Communist Party.
Two trains collide in Sangi, Pakistan, killing between 200 and 300 people and injuring an estimated 700 others.
The Leaning Tower of Pisa is closed to the public because of safety concerns.
Thousands storm the Stasi headquarters in East Berlin in an attempt to view their government records.
The city of Tiraspol in the Moldavian SSR briefly declares independence.
Four months after their exit from power, the Polish United Workers' Party votes to dissolve itself and reorganize itself as the Social Democracy of the Republic of Poland.
The trial of Joseph Hazelwood, former skipper of the Exxon Valdez, begins in Anchorage, Alaska. He is accused of negligence that resulted in America's second worst oil spill to date.
German reunification: An agreement is reached for a two-stage plan to reunite Germany.
A fire at the Sheraton Hotel in Cairo, Egypt, kills 16 people.
Police seal off Brixton in South London after another night of protests against the poll tax.
Prosper Avril is ousted in a coup in Haiti, eighteen months after seizing power.
Mikhail Gorbachev is elected as the first executive president of the Soviet Union.
Cold War: East Germany holds its first free elections.
Ferdinand Marcos's widow, Imelda Marcos, goes on trial for bribery, embezzlement, and racketeering.
After 75 years of South African rule since World War I, Namibia becomes independent.
In New York City, a fire due to arson at an illegal social club called "Happy Land" kills 87.
The Community Charge (poll tax) takes effect in England and Wales amid widespread protests
Cold War: The Soviet Union apologizes for the Katyn massacre.
Cold War: West Germany and East Germany agree to merge currency and economies on July 1.
President of Zaire Mobutu Sese Seko lifts a 20-year ban on opposition parties.
In South Korea, police battle anti-government protesters in Seoul and two other cities.
First talks between the government of South Africa and the African National Congress.
Manjil–Rudbar earthquake affects northern Iran with a maximum Mercalli intensity of X (Extreme), killing 35,000–50,000, and injuring 60,000–105,000.
Hajj stampede: A stampede in a pedestrian tunnel leading to Mecca kills 1,426.
A U.S. District Court acquits Imelda Marcos on racketeering and fraud charges.
In Kenya, riots erupt against the Kenya African National Union's monopoly on power.
Gulf War: Iraq invades Kuwait, eventually leading to the Gulf War.
U.S. President Bush orders U.S. combat planes and troops to Saudi Arabia to prevent a possible attack by Iraq
When contemplating the reason(s) for the failure of the United States to approve the Treaty of Versailles, appended to which was The Covenant of the League of Nations, one needs to keep in mind the provision of the United States Constitution pertaining to international treaties. The authors of the constitution were very concerned about establishing a form of government that would be exceedingly unlikely to devolve into a dictatorship.
Having a source of energy nearby and a reliable way to move finished products turned many Midwestern cities into industrial centers. The coal provided the fuel needed to make iron, steel, and many other products. The railroads brought coal and raw materials to the cities. They also provided a relatively inexpensive way to transport the finished products to other cities.