Answer:
Due to lack of technology.
Explanation:
It took several centuries before the civilizations of the two hemispheres had communication because of lack of technologies that can make a bridge of communication between two hemisphere. People are not interested in research and having old wrong beliefs that prevent them from growth and development but due to renaissance movement people get rid of false and wrong beliefs and work for the advancement of technology which leads to communication between two hemisphere.
Answer:
Rinse the tooth first then put it in a cup of saline for transport.
Explanation:
With our current medical development we are able to perform a tooth re-implanting procedure , in which a dentist will put the knocked out tooth back to the initial position.
Putting the tooth in a saline will prevent bacteria from accumulating in the tooth. Not doing this before replanting the tooth could potentially cause a more severe infection in your mouth.
Answer:
Darwin lies in Northern Australia
The people that had a nomadic lifestyle meant that they were able to communicate with people of multiple ethnicities, cultures, because they were traveling most of the time and were passing great distances, and they also needed a relatively short amount of time to get from one place to another. Because of this the nomads had knowledge of the technologies in multiple places, so they were the perfect people to spread the new invention. Because of their lifestyle they were also great for trading, and no wonder that the silk road was passing through nomadic lands and was mainly organized by the nomadic people. Unfortunately, besides the positives, there were also negatives in this, like transferring diseases in multiple regions very quickly, like the case with the plague/black death that had devastating effects on the demographics in Asia and Europe.
