Help me please!!! Thank you! What event served as the catalyst for the outbreak Civil War?

Why was the subject of slavery so controversial in the United States?

Identify and explain the significance of Abraham Lincoln’s Emancipation Proclamation of 1862.

Identify and explain the significance of the Battle of Grettysburg of 1863.

Describe the predicament for Canada as a result of Unionvictory in the Civil War in 1865

a.that is my answer.

brainliest .

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.

d. the great plains       hop3 this yo

monitor contract compliance and results of forestry activities to assure adherence to government regulations.  

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