God gave people salvation, so Christians share the message of god's love and salvation, so people will recieve salvation, be forgiven their sins, convert to Christianity and follow God's guidance in life.
A person who converts his religion is typically referred to as a convert or a convert to the new religion.
The converts were called earlier as gentiles.
diffudion and converts
The more the specific religion followers the more will be the converts from this religion to Islam. Accordingly, most converts to Islam are from Christian religion. Some think that most converts to Islam are from people who had no previous convictions or beliefs. Refer to links below
The purpose of life
An Apostate Jew
A Jew that converts to another religion.
Many early converts to Islam were impressed by the good character, integrity, sincerity, good will, and enthusiasm of it's followers. Many early converts were attracted to the monotheism. And many early converts preferred any religion to death.
india
Mao Tze Dong believed that religion is an institution that seeks to dominate the common man.
He came to the conclusion a frontal attack on the religion would not succeed . He built a school and a little hospital to gain converts
Here it is hard to say, as both Islam and christianity have large number of converts daily.