This is an electronic travel authorization system used to gain travel authorization to the United States. There are certain countries that fall under a visa waiver program, meaning that you do not need a visa to enter the US to visit. In that case you use the ESTA system. The countries that qualify in the VISA waiver program include Andora, Australia, Austria, Belgium, Brunei, The Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Iceland, Ireland, Italy, Japan, Latvia,...