From the collapse of ancient Rome to the fall of the Mayan empire, evidence from archaeology suggests that five factors have almost invariably been involved in the loss of civilizations: uncontrollable population movements; new epidemic diseases; failing states leading to increased warfare; collapse of trade routes
Parliament unified England by developing the House of Commons and the House of Lords-representation of the common people
The British government would not address American complaints that the new laws were unfair. This then led for the Americans to revolt and make the Declaration of Independence from the British.
Answer:
It allowed for the spread of different materials.
Explanation:
The Silk Road allowed for the spread religion, ideas, materials and brought knowledge to most areas of asia. It also brought economic growth to individuals and city states.