Toward the end of the Acheulian period, a technique developed that enabled toolmakers to produce flake tools of a predetermined size., which was called the method.

Levalloisian

Explanation:

Levalloisian was the method developed during the Acheulian period that enabled the production of flake tools . the Acheulian was an archaeological  stone tool industry that produced tools made of stones across Africa and other parts of the world like Europe, Asia mostly east Asia.

some of the tools produced during the Acheulian period includes multi purpose Axes used for digging the soil, skinning and killing games and also used during warfare. the Acheulian industry was one of the earliest tool making industries. during the times of pre civilization. Acheliuan tools were said to have been produced almost 1300 years ago.

#2 the answer is d

#3 the answer is a

#4 the answer is b

the ss was the main organization responsible for the genocidal murder of around six million people of european ethnic minorities, essentially jews, in the holocaust. the members of all its branches committed war crimes and crimes against humanity during the second world war (1939-1945). likewise, the ss were involved in commercial enterprises and exploited the inmates of the concentration camps as slave laborers.

the tortures and assassinations committed by the ss were the result of an ideology developed long before the armed conflict, this ideology was based on the racial supremacy of the germans over the rest.