History over longer than about 100 year periods has not been observed and verified scientificly either. Anything longer takes trusting evidence not directly observed by any single person. Yet I have no problem believing that human history is in fact longer than 100 years.
You are comparing apples to oranges here. History was witnessed by someone and the humanities are not science. But since you bring up the subject of observation, clearly history is actually observed by someone and then at that time a record is made. Macro-evolution on the other hand is not witnessed by anyone but people study something past tense and render an opinion as to what they see.
I am willing to believe that species can change to adapt but the fossil record can only be interpreted to mean one thing or another, and that opinion changes from time to time. And there is a huge difference between micro and macro evolution. once does not lead into the other (unless you assume).