Yes, the Roman Empire did conquer Greece.
After taking over western Europe, the Romans turned east and progressively incorporated the Greek world into their empire.
yes. they also conquered places such as Spain, Egypt, turkey, and Greece
Over two centuries, they brought the entire Greek world under their control.
yes the Romans defeated the last of the major greek city-states in 146 BC.
The Romans decided to conquer all of Italy because they wanted to expand their empire.
Of course the Romans did not conquer the US. The US did not exist at the time of the Roman Empire, and in any case, the Romans had no idea that the American continents existed.
they where mad at Greece
Persia did not conquer Greece. Persia attempted to conquer Greece but the invasion was repelled. Earlier, Greeks had fought against Persia in the Ionian Revolt, and the Persian invasion was intended as retribution for the violation of Persian temples.
The Romans never conquered the Seleucid Empire.
The Romans improved travelling conditions by building roads and bridges.
google it.....