Jacinda Ardern is New Zealand's youngest Prime Minister. and New Zealand's third female Prime Minister. He was popular in his country before. Your question should be that how did Jacinda Ardern become so popular in the world? A major reason behind this is its location during the Christchurch mosque attack. The way he managed everything at that time is admirable. He met the victims' families less than 24 hours after the attack.
And unites all New Zealanders. He became so popular because of the humanity he showed at that time. He changed New Zealand's gun laws after the Christchurch mosque attack. Jacinda Ardern is a very kind hearted person. Always try to respect everyone.
New Zealand became the first country in the world to declare itself corona free during covid 19. Of course Jacinda Ardern's extraordinary leadership has played a big role behind this. When the covid 19 pandemic first started in New Zealand. That's when Jacinda Ardern put New Zealand on lockdown. And New Zealand was in lockdown for a little less than 2 months.