One useful method is to combine
country-capital memorization with map practice.
Instead of memorizing a long alphabetical list, study countries by continent and locate each one on a map. Then try recalling the capital without looking at the answer.

For example:
Australia → Canberra
Brazil → Brasília
Canada → Ottawa
Active recall and repeated review can be more effective than simply rereading lists.
👉 World map and countries-capitals reference:
https://thecampusreview.com/geography/world-map-with-countries-and-capitals/