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Frey appearance of races
It is commonly assumed that population explosion is a phenomenon peculiar to our times
But this is not so spectacular population experts have occurred with each major technological breakthrourowing history
And for the obvious reason that an advance in technology needs to increased productivity
Which can support a larger number of people by human standards of the time
The differential between early and late parolific technology deto represent a major advance
This in turn led to a population jump from an estimated one hundred twenty five thousand juminutes in the early peliolific to five point three
Two million homo sapienons at the end of the pealolific ten thousand years ago
On the eve of the agricultural revolution
This increase of over forty two times is fast comparable to the population explosions
That as we shall see where to accompany each of the later technological revolutions
Another demographic pattern sts at this time
And repeated in the future was the discproportionate increase of any population that took the thead in technological innovation and hands the spread of vet population over larger areas
This pattern has prevailed since the first appearance of life on earth
In accordance with a law of cultural dominance propounded is follows by the anthropologists md silence and er service
That cultural system which more effectively eploied the energy resources of a given environment will tend to spread in the that environment at the expense of less effective systems higher forms characteristically exployed more different kinds of resources more effectively than lower
Hence in most environments
They're more effective than lower
Thus more greater range at all times
The best adaptive species or that which is most efficiently exploitting the physical environment is the species that as prevailed and stand it is domain
Thus the austronauoppietheines with their primitive pebble tools and lack of clothing were unable to extend their range beyond the orms avana lands
Homosapienons with more advanced technology and correspondingly more efficient adaptation were able to push north into the ciberarian tanra
As well as southeast into the african and southeast asian tropical rainforests part of the superior human technology was the construction of various devices for crossing bodies of water depending on local nature resources
These devices were a four basic types
Skin boat
Bark boats
Raft and doubet
With this variety of votes early humans were able to cross rivers and lakes
And even the wider expenses of water from africa to europe
From southeast ast ge at australia
And from siybera to north america
This spreading out was greatly helped by the ice age
Which suacked the ocean waters up into the ice gaps
That's blowing the level of the ocean are creating lanbribriges between continents under these circumstances
Humans occupied all continents accept antardiga
They became together with their inseparable dog
The most widespread animal in the world
Handing hand with the disperse of homosapiions went raise differentiation
A variety of so called race up here with distinguishing characteristics in skin color
Hair texture
These facial structure
These raises are believed to have emerged because of the relative isolation of the various human populations
And there are adaptation to differing local environments
The significant point concerning these differentiation within the human species is that it occurred so late
Well after the emergence of homo sapiens
All moderraces then steand from a common stock
And after it had obtained its full human development
This explains why the europeans were able to interpret
Why all the races in the lands discocored it
It explaplawhy it vivirtually all anthropologists agree
There are no significant differences in inlate mental capacity among all races representatives of late palolific or of the contemporary australian oorigties
Who would stand us much chance of graduating from a universities
As would
Would representatives of any other living races
The details about how the races appear in various regions are not known and probably never will be archaeologists have long accepted the out of africa theory about human origins
Which holds that humans appear forthsin africa wince they migrated to other continants
This theory along with others is being questioned
Because of discoveries being made virtually every year in new excavations throughout the world for example stone tools recently found in northern n australia
Indicate human settlements in that regionous earas one hundred and seventy six thousand years ago
Which undermines past theories that dated earliest immigrations at fifty thousand to sixty thousand years ago
Equal desparable are past theories about the date of early migrations to central asia
Compared to much older bones and stoned tools recently found their in caves
Though grade and numerous are the disparities disclosed by ongoing excolovations
That archaologists now are reassessing chershed past assumptions some are asking whether the original human birth place was in africa or in asia
Oththers known as multorigionalists believe the cradle of the human race will never be found
Because a single source for all humans does not exist anyway rare
Rather they find more plausible the theory of multiple regions for the human species at different places
Despite the present uncertain about human origins and evolution
We do know that
By the end of the latest ice age about ten thousand years ago
The global distribution of raciwas beginning to be the same as yesterday caucucides occupiy the europe northereth africa in the middle east extending into indian centrcentral asia
That negorites were in the sahara better water than and a bit southward
Where is the piggmies and bushmen in contrast to litter times occupy the remainder of africa
Other pigmies the nigitolilived in the arrest of india and southeast staia
While in the open country of these regions and in australia were the astronoids
Finally in east asia
The americans were the mangoloyeds
Although the racial patterns is veglarly similar to today's
The map of global race distribution shows that basic changes had occurred by one thousand ce and still more by today
This changes as we shall note later pain as a direct result of later technological revolutions
It was the fetter to keep up with these revolutions
That explains the virtual disappearance of the bushmen and peitme and and astronids
As well as the swamping of the american indians in most of the new world
Putting other words explained why ten thousand years ago
Blongs probably were no more numerous than bushmen wheas today there were one hundred thousand balloons for every living bushman
The very different experience of the bushmen compared with those of the caucusides or other races had nothing to do with differences in ability
We will return to this important point by the end of part four races in history
Where we should considered reasons for the varied racial experiacces in conclusion
It is not worthy that lial humans were dividing into various races
They were also growing in height
Where as our early ancestors reach an average height of four feet six inches
Today our average is five feet ten inches
These growth is believed to be due to abandoned and reliable food supply especially animal protein and immunization during childhood which has curbed growth inhibiting diseases
The body growth has continued through modern times as evident in the size of the body armor of did evil nights into which most adult males today would be unable to squeeze