ELI5 Ice Cream - why do we eat it out of a cone?

Why is vanilla the neutral flavor? Who invented ice cream? Why does ice cream in root beer foam so much (and taste so good)? Which country in the world consumes the most ice cream per capita?

... We explain like i'm five!

Thank you to the r/explainlikeimfive community as always and in particular the following users whose questions and comments formed the basis of this discussion: coolrulez555, arokthis, melia2005, zk686, masterofevilaku, triasatops1, dholmes85, tjorvensnorren, freetattoo, themundratales, bulksalty & audiotecnicality

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