Yes. It's slightly slanted on the right.
The Qin dynasty was the first dynasty to start connecting the various walls into a greater whole. That happened around 221 to 206 BC and was done under the reign of Qin Shi Huang. Though the wall was later improved still by other dynasties, it was during the Qin dynasty that the Great Wall of China was first formed into a cohesive structure.
The answer you might be looking for is:
The Fourth Estate was made up of peasants and city workers.
Why? The Fourth Estate also had the bourgeoisie, The bourgeoisie were wealthy but unlike the nobility had no inherited titles.
The goal of the writers of the Lecompton Constitution is humanitarian aid to slaves. It was proposed for the state of Kansas in response to the anti-slavery position of the 1855 Topeka constitution and other free state advocates. The constitution protected the slave holder rights, enshrined slavery and allowed voters the choice of allowing more slaves to enter the territory.
I think the most significant cause of World War one was the assassination of the Archduke Franz Ferdinand. The other causes of the war was Imperliasm, Militarism, Nationalism and Alliances that were formed.