The monarchy imports Sunnis from Pakistan, Syria and other countries and gives them citizenship in order to change the country’s demography:
This exploding population is confined to less than half the land mass, since vast royal properties and local and international military facilities are off-limits to ordinary Bahrainis (see figure 4). The result is acute overcrowding and housing shortages.
In a 2011 Gallup poll, 41 percent of Bahrainis said they had lacked the money to provide adequate shelter for their families over the previous twelve months. Extended Bahraini families are forced to pile into a single apartment—three or four brothers and their wives and children bunking with grandparents, one room per nuclear family.Check the source and read more about corruption in Bahrain.