Ineed simple sentences for a five year old using he, the, and, to with 5-7 words

Which part of the original work should the adaptation retain

American history (is, are) studying the american colonies.

Idon't know which one from these two forms is correct! "he believed that the technology of the future would allow robots to do the same tasks as a human." or "he believed that the technology of the future would have allowed robots to do the same tasks as a human. , it's ! i need your !