The Byzantine Greeks called themselves Rhomaoi (Romans) and their Empire the Roman Empire. They saw themselves as the continuation of the Roman Empire and never used the term "Byzantine" to describe themselves. There was no one clear period when the Eastern Roman Empire became the Byzantine Empire.
The different African colonies aren't united because of their languages, religion, and culture. Because of this, European armies are large and can easily take over the small African colonies because they don't like eachother and won't put their powers together for the greater good.
Answer;
European isolation from the rest of the world
Explanation;
-The Age of Exploration was a period from the early 15th century and continuing into the early 17th century, during which European ships were traveled around the world to search for new trading routes and partners to feed burgeoning capitalism in Europe.
-In the process, Europeans encountered peoples and mapped lands previously unknown to them. Among the most famous explorers of the period were Christopher Columbus, Vasco da Gama, Pedro Álvares Cabral, John Cabot, Juan Ponce de León, and Ferdinand Magellan.
-The Age of Exploration was rooted in new technologies and ideas growing out of the Renaissance, these included advances in cartography, navigation, and shipbuilding.
The Himalayan Mountains created a natural protective barrier. Many civilizations have benefited from natural protective barriers. Egypt had the desert, Switzerland had the Alps, the Alps saved Rome too.
Answer:
number five is the first one and number 6 is the second one