Carrie is comparing two stars of similar size from two different galaxies. Which of these characteristics is most likely to be different about the two stars?

amount of energies released by them

Explanation:

The two star's of similar size but from different galaxies will release different amount amount energies as their distance from the our planet is different. The amount of energy received by a star from same galaxy would be more than a similar sized star from different galaxy as it is far off to our planet.

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

sounds good to me mate!