What might have been the outcome if Great Britain, France, and other European nations had not chosen to appease German, Italian, and Japanese aggression?

If Britain, France, and other European nations had not chosen to appease German, Italian, and Japanese aggression then the countries would have went to war against each other. They would also have been a lot of blood shed. Finally, Germany, Italy, and Japan would have slaughtered the other countries' men like it was nothing because they had the better military.