Well, I'm not going to get into the whole reasons as to why WW3 started, but let's just say the roots are economic, and tied into issues of state sovereignty. Alan Bradley is the current Prime Minister, and has the distinction of being the first Terran PM of an interstellar Federation. As far as any effect alien contact's had...well, we'll get to that in due time.
***
"There really is something to be said when you find out that there isn't a precedent or past example to rely on in something. It's something entirely different when you realize that YOU become the precedent." - Alan Bradley, Prime Minister of the Terran Federation
Such is the truth. The scientific minds of Earth were well aware of the handicap humanity faced at the moment. While the other major powers were well aware of the stars and galactic travel, even without the benefit of Hyperdrive, the humans barely had any real notion of them aside from the fact that A) That they were there, and

There were quite a lot of them. They didn't know what stars had any planets that could support an environment that could sustain human life, if they did at all.
Thankfully, stellar geographers were well versed in the planetary scale, a useful tool that was granted to them by the Arceans at first contact. What was considered ideal was a "10", which was what Earth classified as, and the higher the planet was on the scale the better suited for life it would be. That still didn't solve the obvious question: while they knew WHAT would be suitable, the question was, WHERE were they?
The answer would become readily apparent soon, as Prime Minister Alan Bradley would sign Executive Order 386, which gave direct authorization for construction of Earth's first three Hyperdrive capable ships to be constructed. Among them, which would embody more importance to the Federation's efforts than anyone realized (though they had a pretty good idea) was the TFS Da Gama, a ship with a vast amount of sensors capable enough to seek and search out "anomalies" as the scientists termed and analyze them for the benefit of mankind.
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The TFS Da Gama, named in honor of one of Earth's early explorers and pioneers.
A commercial ship contracted to extract mineral resources in Earth's asteroid belt
and beyond was the second ship constructed. Earth's resources were great, and hopefully so would the future colonies, but every little bit counted, and Bradley was not about to take any chances. The extra resources found and sent back by the TNS Adam Smith would fuel humanity's expansion into the stars.
Last, but not least, was the Mayflower 2, Earth's first interstellar colony ship. 500 million souls clamored to be the first pioneers across the stars, and the line for promised future voyages only grew longer. At last, thought many, a new start, a new home!
At last, on December 31st, AD 2225, all was ready. The following is an excerpt from the personal log of Captain Sam Mitchell, the captain of the Mayflower 2.
***
"It took us practically half a year, just to even get this far, but dangit, we're here! We're really about to start! I remember hearing the naysayers, how few there were at least. 'It'll never work!' or 'Hyperdrive hasn't been proven yet!' Well, we were there to prove them wrong.
New Year's Eve, all three of us (Ed: the three ships) were there, gathered in the rechristened Kennedy Interstellar Star Port over in New York City. I remember passing through some of the corridors (Heaven forbid I go through each and every one of them, it's the population of some of the third-sector districts* on Terra!), and talking to some of the colonists. They were nervous, some giving some tearful goodbyes to relatives on the Image Phones. But above all, they were excited, you could feel it in your bones.
When I returned to the bridge, even *I* was feeling it, though not because I was nervous of the journey, I had faith in the ground crews. No, the man waiting for me on the bridge was no one other than ole' Al Bradley himself! If that's not enough to press onto you just how literally the eyes of the world was on this ship, nothing will. He shook my hand (pretty tight grip too, the man was only thirty-some years and in good health), wished me well, then turned to the camera crew that somehow managed to set up, God only knows how they got around the crew without getting in their way. There he gave this grand speech that broadcasted to all of the world, 'Just about a few hundred years ago, Neil Armstrong was the first man to set foot on the surface of the moon. He took the first step.' He then turned the camera to myself, the crew, and (I could see on the other screens) the passengers, and, I'll never forget those words, 'These brave men and women will take the next step! THIS is the future!'
As soon as all the hooplah was finished, everyone not supposed to be on the ship cleared out and a safe distance away from the Mayflower. The captains of the Da Gama and the Adam Smith gave us some last good-byes, and then right there, right on the dot at 0:00 AM New Year's Day, I gave the order to launch. It was beautiful; the fireworks were dentonating all around us in one massive goodbye from Earth, almost feeling like glittering confetti. The world just kept shrinking from there..."
***
The Da Gama and the Mayflower 2 would continue alongside each other for about a month , while the Smith veered off and entered the asteroid belt, discharging its crews to begin setting up extraction centers.
While their destined voyage continued, Bradley wasted no time in ordering the construction of another colony ship, and spared no expense in ordering research by the great minds of Terra to proceed, starting with the overhauling of current research methods to match the changing times. It would be a wise decision, as within only three weeks, the scientists were claiming they were on the verge of several breakthroughs, such as properly mapping the star systems of the galaxy; approval to proceed was swift from Bradley.
Meanwhile, upon further surveying, Western Europe was found to possess a previously undiscovered source of mineral resources. Bradley immediately ordered that all of western Europe be converted into a n industrial zone, with Dresden, Germany the headquarters of manufacturing. More construction projects would continue afterwards.
Finally, on Febrary 15, fruits of Earth's labor was already being seen. The first mining station in the asteroid belt, Asteroid Base "S-Alpha,"* was complete, and volunteer laborers were immediately shipped to S-Alpha to begin work immediately, and within the week, shuttles full of malleable minerals were arriving in Dresden. However, that was not the cause (though it contributed) to such excitement. Once again, an excerpt from the journals of Captain Mitchell will suffice.
***
February 15th
"I remember having kept asking the Da Gama's captain for verification about fifteen times. Whether I annoyed him or not I'm not sure, since we were both literally jumping out of our seats practically. Our first exploration site, and we already found something. A Class 10 world in the Hyadea system! He gave me the coordinates, then broke off, as he had more to discover. I wished him well and gave the order to proceed ahead full; the Da Gama's captain and I kept in touch through e-mails, but we wouldn't see each other again until he retired three decades or so down the road."
March 1st
"Not much to say other than having to fend off the various 'Are we there yet?' questions from the passengers."
March 8th
"Monty (My helmsman) tells me we're only about four days away from Hydea IV now. It's no use trying to keep the passengers away from the observation decks; it's been almost three months, and they deserve to see what their future's going to look like from orbit. I don't blame them either. It reminds me a lot like Terra; lots of green, sandwiched by some oceans, and from here, Hydea's sun reflects it brightly enough to remind me of a glittering diamond. If the stellargeographers have their act together, it'll be just like home too. I can't wait."
***
March 15th will then be forever known as the day humanity expanded to its first colony, Hydea IV. Since landing, the colony was then stripped down by the crew and its passengers and immediately made the foundation of the initial settlement; the Mayflower 2 was no longer a colony ship, but now Hydea IV's capitol. Ever since, the planet had been rechristened "Mitchell" in honor of the captain who ensured the safety of the passengers and crew.
While ecstatic over the news, over the previous weeks, the Sol sector had not been idle. On March 8th, Dresden reported that the factory district was complete, and immediately began to process S-Alpha's bounty into a new colony ship. Meanwhile, both Wall Street and a joint Seoul-Tokyo conference proposed new districts to be dedicated to commerce and trade, which Bradley acceded to; expansion would require credits in the billions.**
Things were looking up for the Terran Federation; three months, and results were already being seen.
*S-Alpha stands for "Sol Alpha." This is the conventional naming scheme for mining colonies.
**Hence it's no coincidence that, despite whatever currencies any galactic power would use, its governments would ALWAYS, in bureaucratic matters as well as foreign affairs, would make the necessary adjustments to BC, or "Billion Credits," credits being legal tender anywhere.