Is my introduction and conclusion good. I am bad at grammar, spelling and the concepts

Introduction

Our ancestor has developed techniques to make our world better and most importantly findings ways to survive and to gain benefits from efforts. Every century a group of people finds ways to methods and adhere knowledge of what have been learn through other people's invitations. Agricultural Revolution and Paletonic era have work on living. Farmers and hunters represent an important factor of changing our futures and creating history.

conclusion

The past, present, and future can impact how our world advance and can be positive in a way to grow and to expand the field of farming and hunting.