What were tools such as sharpened stone tools and spear throwers used for?

What was the plight and fight of the following groups? labor farmers native americans african americans women immigrants ~ ap u.s. history (period 6: 1865-1898)

Who ever answer first get ! question 1 : which pair of words names two processes for treating water to make it clean? a. aeration, precipitation b. coagulation, refurbishing c. filtration, coagulation d. combustion, aeration question 2: which act did the u.s congress pass in 1972 to protect th nation's water? a. anti-pollution act b. watershed protection act c. clean water act d. nixon act

In what middle eastern country did a terrorist attack on americans take place in the city of manbij?