2100 - 2199

2103
Humanity established a foothold on Mars and the colonization process begins.

2105
Eight women are brutally knifed to death by an unknown assailant in the Martian Colonies. This is later found to be the same entity that committed several murders on planet Argelius in 2267. 

2113
Having learned the lessons of the last World War, the first united Earth government is established. Australia is the only nation that declines membership.

2119
The Warp 5 Complex is established to create technology that will allow humans to safely explore deep space. Zefram Cochrane is present during the dedication ceremony. Cochrane, now advanced in years and a resident of the Alpha Centauri system, soon takes off for "parts unknown."

2123
Spacecraft SS Mariposa is launched. The craft carries two groups of colonists bound for the Ficus sector. It settles colonies on Bringloid V. It later crashes on planet Mariposa while attempting to settle a second group of colonists.  There are only five survivors of the crash, who attempt to keep their colony viable using cloning technology.

2150
Australia, the last holdout, joins the United Earth government.

2151

• April: The Warp 5 engine is completed on Earth and is tested by Earth's Starfleet. The Earth ship Enterprise, NX-01, under the command of Captain Archer, returns the klingon Klang to Qron'os. Sub-Commander T'Pol of Vulcan is also onboard as an observer, in exchange for Vulcan starcharts. The Suliban attempt to stop Klang from being returned to his people. Also the first use of Phase Pistols, predeccessors of Phasers, which only have 2 settings, stun and kill.
• May 6th: First Contact with the Axinar by Earth starship (ESS) Enterprise. First Contact with unknown species (Possibly Breen) by ESS Enterprise.
• June: An Imperial Klingon vessel under the command of Captain Vorak fires on ESS Enterprise. First reported instance of a human male becoming pregnant is reported in Commander Charles Tucker, Chief Engineer of the Enterprise. First Contact with the Zyrillian species.

2156

• The Romulan Wars begin between Earth forces and the Romulan Star Empire. The war is fought with primitive atomis weapons, and the Romulan fleet is not even equipped with warp drive. Among the human casualites are several member of the Stiles family.
• Two women knifed to death at Heliopolis City on planet Alpha Eridani II. The murders remain unsolved until 2267, when it is learned that the same entity had committed several similar murders on Argelius II.

2158
The Andorian Admiral Tomar commands the 2nd Allied Tasked Force against a Romulan Task Force in the battle of Alexander X.  He successfully stops the Romulans at Alexander X.

2160

• Romulan Wars are ended at the Battle of Cheron. The Romulans suffer a humiliating military defeat at the hands of Earth Forces.
• Romulan peace treaty signed, establishing the Romulan Neutral Zone as a buffer between the planets Romulus and Remus and the rest of the galaxy, violation of which is considered to be an act of war. All negotiations were conducted by sub-space radio, without face-to-face contact between the parties. The pact is known as the Treaty of Algeron.   This pact also prevents the Federation from persuing the development of cloaking technology for Earth (and later Federation) starships.

2161
The United Federation of Planets is incorporated at the First Babel Conference. Starfleet is established with a charter "to boldly go where no man has gone before." The Federation is governed by a council, located in the city of San Francisco, California on Earth, and the Federation council president's office is located in the City of Paris, France, on Earth. The Constitution of the Federation includes important protections of individual rights including the Seventh Guarantee, protecting citizens against self-incrimination. The original sugnatories include Earth, Alpha Centauri, Vulcan, Andor, and Tellar. The Rigel/Orion Colonies remain outside the Federation entirely.

2165

• Sarek of Vulcan is born, the child of Skon and Solkar. He becomes one of the Federation's most distinguished diplomats.
• Guinan has her last encounter with Q prior to 2365. The two are not particulary fond of each other.
• Planet Deneva is colonized by the Federation. It is held by many to be one of the most beautiful planets in the galaxy.

2167

• The Starship Archon visits the planet Beta III in the C-111 system. The planet's master computer, known as Landru, destroys the ship by pulling it out of orbit. Many Archon crew members are killed, but many more are "absorbed" into Beta III's computer-controlled society, becoming known as "the Archons" to the planet's inhabitants.
• The USS Essex, NCC-173, a Daedalus-class starship under the command of Captain Bryce Shumar and First Officer Steven Muller, is caught in an electromagnetic storm and destroyed above the Class M moon of planet Mab-Bu VI. Teher are no survivors of the crew of 229. The fate of this ship remains a mystery until 2368. Shumar's immediate superior in this sector had been Admiral Uttan Narsu of Starbase 12.

2168

• The Starship Horizon visits planet Sigma Iotia II, about 100 light years beyond Federation spacea planet lying about one hundred light years beyond Federation space. The crew reports the humanoid population of the planet to be on the verge of industrialization.  At this point, Starfleet has not yet instituted the Prime Directive of non-interference, and a member of the Horizon crew leaves behind a copy of a book entitled Chicago Mobs of the Twenties. The disastrous thogh unintended result is that the people of Iotia adopt the book as a model for their society. Shortly after the contact at Sigma Iotia II, the USS Horizon is lost along with all crew members. Because of this, Starfleet remains aware of the contact and the cultural contamination until radio signals from the Horizon are received a hundred years later.
• Settlers from Earth establish a colony on the planet Moab IV. They create a sealed biosphere in which they plan to create an ideal society using genetic engineering.

2169
A new type of impulse engine is adopted. The basic design of impulse drive remains unchanged for at least two centuries.

2170

• The Kavis Alpha neutron star explodes. This phenomena repeats itself every 196 years, and will occur again in 2366 when the Enterprise-D will be present to observe it.
• A group of Native Americans seek to preserve their cultural identity by leaving Earth to establish a home elsewhere.
• Dr. Emanuel Tagore is born.

2178
The Daedalus-class starship USS Reynard, NCC-188, disappears during a mission to deliever specialists and 300 new colonists to a colony. (See http://atrek.org/atrek.html for more information.)

2196
The last Daedalus class starship is withdrawn from serviceby Starfleet Command.

2199
Membership in the United Federation of Planets reaches 50 worlds.