Passage: In 1943, heavy tsetse infestations occurred throughout the region, delaying the creation of the national park. By 1953, the project received governmental attention again: 21,000 km2 (8,100 sq mi) were suggested to become a game reserve. Chobe Game Reserve was officially created in 1960, though smaller than initially desired. In 1967, the reserve was declared a national park.

Question: What got turned into a national park?
the reserve