The last one laissez faire systems and pure commands I think
<span>The 0-19 demographic is the cohort that is the majority of the population in the US over the years. This seems to be counter-intuitive, since it is usually thought that there are typically more adults than kids, but it shows that adults are more dispersed in their ages than youth are in the country.</span>
Well.. none now since they're dead... haha but when they were alive they were flightless and very clutsy birds, no wonder why they're extinct!
