Answer:
The wheeled cart allowed for faster transport of goods and services. This allowed trade between distant cities and towns to become easier to accomplish. Trade became more popular due to this fact.
Hope this helps :)
Answer:
unity in diversity means that people of different religions, nationality, ethnicity ,caste and culture should live together.
All of the above can e reasons to revoke a driver's license.
This is of course a very complex question that does not have a definitive answer, but 1850s would be a good decade to start counting as "Modern". This was a decade of the telegraph and Darwin's The Origin of Species.
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