Explanation:
Rome was able to gain its empire in large part by extending some form of citizenship to many of the people it conquered. Military expansion drove economic development, bringing enslaved people and loot back to Rome, which in turn transformed the city of Rome and Roman culture
Answer: y=-3
Explanation:
Equation of a line that passes through (a,b) and (c,d) is given by :-

The equation of the line that passes through the points (-4,-3) and (3,-3) :

Hence, the equation of the line that passes through the points (-4,-3) and (3,-3) : y=-3
Answer:
In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2.
I'd guess b on this one. I don't know the definition of watershed, but the amazon is a pretty big expanse of water "stretching" a long way (albeit that water doesn't stretch).