The probe on Mars found a conglomerate rock which is a Sedimentary, rock at the part of the channel where it ended in a triangular shape.
Explain why Sedimentary rock and NOT Igneous rock is evidence that
water flowed in that channel and NOT lava? *

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.

b.lincoln had the victory he wanted for emancipation