Simple tools like (choppers/processors) were used for about 2 million years

Simple tools like choppers were used for about 2 million years.

Explanation:

The early human had devised certain techniques to grant himself convenience in day-to-day life. One such technique was of the use of sharp tools for cutting and chopping. These tools were either made by using the methods of filing, scraping, etc. or were directly used as they were found naturally. Tools like choppers helped early human beings in clearing ground for residence and agriculture.

The repetition of initial consonant sounds is called alliteration

Apolitical machine ~ apex