Thats all, you're done!
You can use multiple lists if you want, so for example if you want to block China, Russia and Cuba:
(I'll give the URL's for the access-list below)
[admin@MikroTik] > /tool fetch url="https://mikrotik-geoip.com/free/?version=6&family=ipv4&type=firewall&country=CN" \
output=file dst-path=MikroTik-GeoIP-CN.rsc
[admin@MikroTik] > /tool fetch url="https://mikrotik-geoip.com/free/?version=6&family=ipv4&type=firewall&country=RU" \
output=file dst-path=MikroTik-GeoIP-RU.rsc
[admin@MikroTik] > /tool fetch url="https://mikrotik-geoip.com/free/?version=6&family=ipv4&type=firewall&country=CU" \
output=file dst-path=MikroTik-GeoIP-CU.rsc
[admin@MikroTik] > /import file-name=MikroTik-GeoIP-CN.rsc
[admin@MikroTik] > /import file-name=MikroTik-GeoIP-RU.rsc
[admin@MikroTik] > /import file-name=MikroTik-GeoIP-CU.rsc
What about IPv6?
If you take the examples from above, but change the family=ipv4 to family=ipv6 . Thats it!