The given diagram illustrates the advancement 
pf
 cutting Correct your spelling
of
tools
 in the Stone Use synonyms
sge
. Correct your spelling
Age
Overall
, it can be seen that the Linking Words
Use synonyms
tools
 A were dark and had many hedges Fix the agreement mistake
tool
while
 the Linking Words
Use synonyms
tools
 Fix the agreement mistake
tool
B
 which Use synonyms
were  
newer Correct subject-verb agreement
was 
ones 
had brighter Correct pronoun usage
apply
coulors
 as well Correct your spelling
colours
asbetter
 forms.
Correct your spelling
as better
Lookind
 at more detail, Correct your spelling
Looking
the 
Correct article usage
apply
tools
 A Use synonyms
date
 back to 1.4 Fix the agreement mistake
dates
milion
 years ago which Correct your spelling
million
are
 0.6 Correct subject-verb agreement
is
milion
 years older than Correct your spelling
million
Use synonyms
tools
 Fix the agreement mistake
Tool
B
. They have dark Use synonyms
coulor
 which can be distinguished from Correct your spelling
colour
Use synonyms
tools
 Fix the agreement mistake
tool
B
 easily. Use synonyms
In addition
, Linking Words
tool
 Use synonyms
B
 has a thin Use synonyms
shap
 at the top which makes it more practical. Things can be cut faster by Correct your spelling
shape
sharp
tool
 Use synonyms
B
. In front view, Use synonyms
for example
, Linking Words
the 
Correct article usage
apply
tool
 Use synonyms
B
 Use synonyms
hase
 Correct your spelling
has
the
 thick body as like Correct article usage
a
as 
Change preposition
apply
tool
 A, Use synonyms
however
, the top Linking Words
sectiom
 of Correct your spelling
section
tool
 Use synonyms
B
 is like a pin which can be more effective when people want to cut items. Other views of Use synonyms
tool
 Use synonyms
B
 have better Use synonyms
shap
 compared to Correct your spelling
shape
tool
 A as well.Use synonyms