The answer is: The sea
Back then, the techology that exist to travel by sea was not as developed as it is today. If an empire decided to travel through the sea in order to do some conquests, that empire will risk several things, such as:
- Loss in directions
- The ships could be swallowed by harsh wheather in the middle of the sea
- It need a lot of resources to maintain the armies during the travel
Your department store receipt says that you paid a 5% sales tax on sports equipment. This sales tax is an example of a
A. proportional tax
This is due to no atmosphere/air on the moon, thus not allowing the moon dust to cover the one small step for mankind. Stay Curious!