If compass was not invented we would get lost and cant find ourselves. That's way in TV you see people using compass in the desert.
We cannot sea the space
People arleady knew how to navigate using stars (for instance before the compass was invented). And anyone seriously working with magnets would've stumbled across one that could be used as a compass eventually.
Well it wouldn't be as officiant
There wouldn't be light in the night sky back then bisides the moon
It will keep on flying and never come to ground
the world would exploder
You would walk.
We cannot sea the space
We can't talk to anyone in different places.
Then Pepsi would take over Coca Cola
the arrow in the compass would point to the magnet
it would spin around and around.
There would be a lot more people dying of diabetes related diseases.
Yahoo would suck a little less. (We would probably use other search engines.)
it farts then it poops
If no gravity or air existed the car would never have been invented. It will not work in the absence of either.
The compass effected exploration because without it, exploration would not have been possible to the early peoples. The compass was invented in China, and some of the earliest explorers were in Egypt. :)