Answer: Social Security, Medicare, and Medicaid
The economic boycotts of African Americans in the southern states during the 1950s showed that the spending power of African Americans could have major changes in civil rights.
Europe has a big number of immigrants, so I would say: most probably all of the religions of the World are represented in Europe to some extent.
On a country level, Christianity (both catholicism and protestantism, in the east also the Orthodox Church) is the main religion, and until WW2 Judaism was also very prominent. Now Islam is growing in numbers, due to the immigration.
Albania and Bosnia are predominantly Muslim.
If you’re talking about supply and demand, demand is how much people want of something, and the suppliers how much of it is available. If there is more demand then there is supply, the price of the product will go up. If there is more supplied and there is demand, the price will go down.