According to NationMaster, America has the most amount of McDonald's restaurants (12,804) with Japan ranking second at 3,598 restaurants.
The first McDonalds opened in Japan during 1971 in a small corner within the Ginza branch of Mitsukoshi department store. Back then burgers were 80 yen.
Today, McDonalds Japan provide competitive menu items for only 100 yen and offer regular discount coupons. All you have to do is bookmark this page on your mobile device and choose what you want with the checkboxes. When you hit the big red button at the bottom of that page, a few coupons will be displayed which you just show to the cashier.