A cold is a air born pathogen ... despite common misconceptions you can not catch it by simply being in cold weather ...
Diseases spread by multiple ways. If you are talking about STD's, then the way its transmitted is the way its name is. If its a normal disease, like the cold, your sneeze affects others.
No
the plague came from Ukraine by the fleas that rats were carrying. it then spred to Greece by shiping which then spred to France and then Englnad.
Yes
Many emperors of India spred Hinduism accross and outside of India. Nowadays Hinduism no longer believes in spreading Religion.
People spred romors because they either don't like the person, they're just mean, or they just like spreading rumors.
To spred christavity
Vietnam
Fleas, ticks, and mosqitoes.
they spred out
the spred of bactriea is caused by sickness
a solid spred through a liquid