THIS IS IN MY TEST How would you compare the mass of an inflated balloon to the mass of a deflated balloon?

The mass of an inflated balloon is higher because it contains air. Even when inflated with helium, it has a higher mass because helium has mass. However, an inflated balloon has a much lower density than a deflated balloon.

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

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