That's one of the first things I thought of.. LA wasn't ground Zero. It's just the start for California.
How did it spawn world wide:
Let's say the biolab is a Umbrella clone and is global. You have a coordinated attack by environmentalists or a disgruntled IT guy who just happened to hack the safety protocols worldwide. The only way I see this as happening so quickly is that there had to be containments units with bioengineered things.
Maybe they were working on a super soldier program...heeehhh
or a more sinister global Tuskeegee type experiment.
Anyway, the creatures in the first episode were walkers with bad skin who reacted to noise instead of smell. Then as the day progressed, there were creatures who had better noses than Scooby looking for Scooby Snacks.
California fell in 2 days right?
- It seems to me that the LA area is the only area so far with the multiple creature variations. I say this because only the Guardians are armed in the Colony (no one is carrying even a stick).
- If they had leapers or behemoths then you'd see the masses carrying some form of a weapon. (That also hints at Marcus leadership style and the conscription/Authoritarian system that's is set up. You don't want the serf's taking it out on the forement do we?)
- The Colony hasn't been up and running long enough to produce crops (i think it takes about 120 days for a Potato to sprout), plus Marcus said as much.
- The Colony doesn't have so much strife that Marcus needs spies to keep an handle on people. You'd think he'd have people watching each other, but he doesn't. He was clueless that Hope was still there. SOO, people know how to keep their mouths shut or they're simply out of the loop about that "rule."