Which of these is a simple sentence?
immigrants who came to work in factories lived in urban neighborhoods.
“old” immigrants often settled on farms, but most “new” ones lived in cities.
in the past, many immigrants had come from northern and western europe.
immigrants worked long hours and faced crowded living conditions.

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

Which of these innovations led to increased production in american factories in the early 1800s? a. the use of interchangeable parts b. the construction of canals c. the invention of the mechanical reaper d. the availability of electricity

How did bacon's rebellion affect relations between colonists and native americans? a. relations improved after many were disgusted by the violence of the rebellion.b. after the rebellion, colonists placed less focus on the "indian problem."c. the rebellion showed many that in order to establish better relations between colonists and native americans,  slavery  had to be legalized.d. more colonists supported an armed expansion into native american territory.