No one can know with certainty what would have happened if the US had not annexed the Philippines.
Undoubtedly, Aguinaldo and his group would have tried to establish an independent Philippine Commonwealth. Perhaps he would have succeeded and the country might have continued as a republic to this day. Perhaps the country would have become a Dictatorship, as many other new independent states have, or perhaps it would have broken up into several rival states.
Perhaps some European empire would have taken over all or part of the Philippines as a colonial possession or protectorate, as they were doing in Africa and southeast Asia.
it will came under French or British rule
It would have obviously led to a war which is what happened anyway.
the snake would have killed her
History will repeat itself.
"Annex" is the singular form. The plural form would be "annexes".
Annex b and annex l
South Korea would now be dominated by communist North Korea
because there would be inbalance between slave and free states
Annex B (Intelligence) and Annex L (ISR)
the Holocaust would not have happend without World War II.
If the Japanese didn't come to The Philippines then the country would be more developed because they had to spend a lot of time and money rebuilding the country after the war ended.
I don't think it would have resulted in anything major or changed history. Others would have done what he did.