The Eastern Roman Empire did take back large swathes of the most important and most valuable territory, in north Africa, Italy, and parts of Illyria. From 533 to 554, Eastern Roman generals waged a long series of wars against the Vandal Kingdom in Africa and the Ostrogothic Kingdom in Italy as part of the Emperor Justinian’s attempt to win back the key territories of the former Western Empire to Roman control.
sorry to say but write your question properly.....
Lots of new machine were made.
Printing press was the most common thing
But we also saw the rise of sweatshops which were very bad in terms of working conditions and pay.
Oil was also found which help with making cars but the left overs from oil were also used in medicine, train tracks etc...
To study history artifacts are needed and often they are lost to history because they have been buried and not found, are under water, are broken or ruined in some way, the site has been raided by thieves and items taken, war often interrupts digs or the archeological sites are destroyed by armies and information is lost. These are just a few things that makes it hard to study early humans and things are found all the time that historians learn from.
Historians need good sources (preferably, written sources) on which to base their studies. If early societies did not leave any written information , historians have to go by other indications like the remnants of villages and temples and perhaps some drawings or carvings. Sometimes these give an indication how societies were (or might have been) organized, but without written confirmation you can never be completely sure. so is that help full or not
