The condition of scare rainfall for a few years is known as a drought (I think)
A: A rock that formed 700 million years ago
Salt was able to preserve meat before the invention of refrigeration is the correct answer.
Answer:
"When Julius Caesar crossed the Rubicon, he started a five-year Roman civil war. ... Therefore, by crossing the Rubicon into Gaul and starting the war, Caesar threw the dice, not only sealing his own political future but effectively ending the Roman Republic and beginning the Roman Empire."
or
"Faced with the intransigence of the Senate, Caesar and the 13th Legion cross the Rubicon, the official border between Gaul and Italy, a decision that will lead to civil war. As Caesar advances on Rome, Pompey and his allies retreat south, ultimately abandoning Italy for Greece. Caesar defeats Pompey's forces in Spain."
Explanation:
I hope this helps, I am sorry if it doesn't
Tobacco plants!! Tobacco plants were a very popular cash crop in the American colonies :)