Which posed the greatest challenge to pioneers crossing the western mountains

True or false: abraham lincoln delayed the emancipation proclamation to make sure the border states would stay loyal. *

Determine whether the following descriptions belong to michelangelo, raphael, or both. important works include school of athens was a renowned artist of the italian renaissance served under the patronage of pope leo x important works include the sculpture la pieta

He table below shows the number of immigrants to the united states from different regions of europe between 1871 and 1910