Phoenicians
yes
The Olmecs were the first and invented and made corn
it was invented by early civilization like cave men and others.
The first civilization that invented the sailboat was the Sumerians.
The first civilization to coin money were the Lydians. Coins were invented in Lydia in around 660 B.C.
China During The Middle Ages
I don't know the exact person who invented the sickle . The Sumerian Civilization came up with the first sickle.
The first civilization to have a system of education was the Sumerians. You can blame them for the invention of "exams".
Roman, china, egypt...
Money(currency) was developed in the Mesopotamian (the first civilization).
the Romans
Chinese