How did new tools revolutionize agriculture during the Neolithic era? New tools saved early humans labor and time.
New tools made it possible to produce less food.
New tools allowed early humans to grow plants without water.
New tools helped early humans develop different seeds for planting.

i believe that the answer to the question provided above is that  establishing smaller ethnic communities within larger communities  gives more chance for people to know each other more but this might lead to the  conflict between groups.

the tallest building in the western hemisphere and the sixth tallest building in the world

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering

the answer that best explains what happened to george washington at fort necessity, pennsylvania is : washington was attacked by the french but was able to negotiate with them to peacefully end fighting. the battle took place on july 3, 1754. the battle is considered as being the start of the french and indian war.