The best answer is "Algeria had a large settler community made up of French-speaking Europeans."
The EEC was created in 1957 by the Treaty of Rome, which was signed by Belgium, France, Italy, Luxembourg, the Netherlands, and West Germany. The United Kingdom, Denmark, and Ireland joined in 1973, followed by Greece in 1981 and Portugal and Spain in 1986.
Answer:
D. Economics systems requiring free labor.
Christianity spread through trade when explorers from different countries crossed paths while on their way to make deals or accept riches or whatever they were sent out to do. the explorers would then sometimes communicate with the others and they’d learn about each other, specifically religion.