The first answer is- The reason why the Indus Valley Civilization vanished is still unknown. Not many artifacts have been found to let us gain insight into their culture. Their writing was also mostly in Sanskrit, which no one can translate in this day and age.
The 2 answer is ----- Best Answer: Their great architectures and their systems also most of the houses had toilets in them which was uncommon at the time
Answer:
France, Britain and Spain, but I'm sure there were others too
