TIMED PLEASE Which of the following events officially legalized nationwide laws like the one described in the passage?

the Tenure of Office Act
the end of Reconstruction
the Civil Rights Act of 1866
Plessy v. Ferguson

The correct answer is D, Plessy v. Ferguson.

Explanation:

Plessy v. Ferguson was a landmark 1896 U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine. The case stemmed from an 1892 incident in which African American train passenger Homer Plessy refused to sit in a car for blacks.

battle of saint-mihiel, (12–16 september 1918), allied victory and the first u.s.-led offensive in world war i. the allied attack against the saint-mihiel salient provided the americans with an opportunity to use their forces on the western front en masse.

explanation:

one of the major compromises in the constitutional convention was between the small states and big states. the small states wanted each state to have the same number of representatives in congress. the big states wanted representation based on population.