It basically means that most people have the same opinion :)
Answer:
He went down the african coast.
Explanation:
I am pretty sure that he went down the African coast, and found a way across the cape into the indian ocean. I don't really kow why this was great, but this opened a trading route for Portugal.
What helped Greece in trade is its access to the sea and its trade roots too.
Checks are pieces of paper that represent an amount of cash. You can turn in that paper for real money. Balances are the amount of money that you have. When you check your balance, you can see how much money you have.