The lower-ranked sides have long called for more fixtures against top nations and their impressive displays during the 2015 World Cup in England and increased development and funding has helped that goal to be partially achieved.
"World Rugby is committed to supporting tier two nations in their competition programmes with the objective of improving competitiveness," the governing body's head of competitions and performance Mark Egan said in a statement.
"We are committed to closing the gap further as we work towards Rugby World Cup 2019 in Japan."
Rugby has traditionally been dominated by the 10 Tier One countries -- the northern hemisphere's Six Nations teams and those of the southern hemisphere's Rugby Championship.
Georgia, another Tier Two side who enjoyed a good World Cup with victories over Tonga and Namibia, will also play Samoa and Scotland while Fiji will clash with England at Twickenham in a repeat of the 2015 World Cup opening game.
Tonga will visit Spain for the first time to face the hosts in Madrid, before playing the U.S. and Italy, while Brazil will also undertake a tour to Europe for the first time, which includes two-test series against Germany.
(Reporting by Nivedita Shankar in Bengaluru, editing by Mitch Phillips)
