Outside these institutions, Islam has an important part in electoral politics as Malay parties promote their Muslim credentials.
They are separated by more than 600km of the South China Sea.
The economy shifted from being agriculturally based to one based on manufacturing and industry.
The east coast and East Malaysia experience longer rainy seasons, and more widespread flooding as a result.
The prime minister must be a member of the House of Representatives, who in the opinion of His Majesty the King, commands the support of a majority of members.