Why do so many Latin prepositions of place take the accusative and not the ablative to express location?

1. What is the difference between accusative and ablative in Latin?
2. What preposition and case does Latin use to express the place where?

What is the difference between accusative and ablative in Latin?

“In” with the accusative means into, onto, against... it has the idea of forward motion, whereas “in” with the ablative denotes simply position, in or on. “Sub” can also take both cases.

What preposition and case does Latin use to express the place where?

Latin uses the accusative and ablative case, frequently with prepositions, to express ideas related to space and place. Below are the different expressions of place used in Latin: 1) Place to which (ad, trāns, or in + accusative): Currēbat ad pātrem.