The US is divided into four different time zones.
Roads and bridges are examples of how Roman influenced art in modern life
Answer:
1.) 36 alien civilizations could communicate with us.
2.) The nearest alien could be on Mars which is 54.6 million kilometers
away.
3.) No I don't agree. There could be millions of alien civilisations out there that we haven't found because space is so big.
B would be the answer I think