Which is the best dated evidence that humans have been on earth for over four million years

skeletons, scientist are finding skeletons that appear to be human which can be dated all the way back millions of years ago.

if you are talking about current time the answer is no

if you are talking about when the colonies were developing the answer is yes

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.