Lack of natural physical barriers allowed invaders to sweep down from Asia and destroy towns.

Keep practicing — related questions

• The history of colonisation reveals that rich resources in colonies were the main attractions for the forei...
• The ______ Desert serves as a natural barrier to keep out enemy forces.
• A stong wooden wall built for defense called a ______________ was used by the Woodland Indians.
• If the dimensions of a physical quantity are given by [MxLyTz], then the physical quantity shall be
• Which of above statements is/are correct? Consider following statements : 1. International Union for Conser...
• The theory of natural selection suggests that the best adapted organisms are selected by nature to pass on ...
• The inner membrane of mitochondria is highly selective to what it allows to enter the organelle. But one of...
• The 10th East Asia Summit was held in Kuala Lumpur, Malaysia in November 2015. In which year was the 1st Ea...