Learn Croatian: Kako koristimo mozak, tako razvijamo i pamćenje. - Just as we use the brain, so too we develop memory.

This structure literally translates to "How..., in that way also...". It is a correlative conjunction used to show that two actions are parallel, proportional, or happen in the same manner. It means "Just as [Action A], so too [Action B]." The addition of the word i makes the connection stronger, emphasizing the addition of the second action.

Why is the word i placed right before pamćenje instead of right after tako?

In Croatian, the emphatic particle i (meaning also or too in this context) usually goes immediately before the specific word it highlights. Here, placing it before pamćenje emphasizes that memory is the specific thing being developed. If you wrote tako i razvijamo pamćenje, the emphasis would shift slightly to the action of developing.

Why do the objects mozak and pamćenje look like they are in the nominative case?

They are actually both in the accusative case because they are the direct objects of the verbs koristimo (we use) and razvijamo (we develop). They look identical to their dictionary (nominative) forms because mozak is an inanimate masculine noun, and pamćenje is a neuter noun. As you might recall from earlier levels, these categories do not change their endings in the accusative.

Could I use sjećanje or uspomena instead of for the word memory here?