The surplus of food lead to everything you see today all because people could settle down and make towns then civilizations and eventually empires
The reason why imperialist seek possession of colonies that had extractive economies is that they wanted to gain the advantage of the global resources in the market especially in the product like flours and wheat. They wanted the resources so that they can expand their trade and widened their market locally and internationally.
Your answer is true have a good day
A. Rejoiced! Hope this helps :-)