1. tidycountries::restcountries_tidy_data
    restcountries_tidy_data
    csv| xlsx| json| ndjson| rda| rds
    tbl_df|583 x 36
  2. tidycountries::world_administrative_boundaries
    world_administrative_boundaries
    json| ndjson| rda| rds
    sf|256 x 2