What type of paint works best to keep a bridge from rusting

Ireally need on this homework! if you get it right so much if not its fine < 3 ! (i have no points so sorry its only 10)i didnt mean to put it on social studies sorry!

After about 1000 b.c, some people in siberia meaning their lives wre bassed on herding animals. a. pastoral b. collective c. irrigate d. dalits

What was one step that charlemagne took to unite his kingdom? a. he chose a single strong heir to inherit his throne. b. he drove muslim forces out of europe. c. he created and supported schools. d. he declared himself head of the catholic church.