According to the chart what was one cause to the russian revolution

Explanation:

According to the chart the main causes of the revolutions include the Czar's weak leadership, Revolutionary agitation challenging the government, and discontent among the people. The lack of strong leadership lead to the fall of the Czars and a new provisional government led by Alexander Kerensky. Revolutionary agitation led to the Bolshevik Revolution led by Lenin. The discontent of the people led to Russia signing a treaty with Germany and leaving WWI under the Bolsheviks. It also caused a civil war to break out between those who opposed Lenin's ideas. This can be compared to the America Civil war, where the confederates wanting to keep slavery, and the Northern States along with the government wanted to abolish it. Like what happens in the U.S we can infer that the government would win against the defiant army.

saint clair’s defeat, (november 4, 1791), one of the worst defeats ever suffered by u.s. forces in indian warfare, precipitated by british-indian confrontation with settlers and militia in the northwest territory following the american revolution. despite specific provisions in the treaty of 1783 for the evacuation of its forts on the northwestern border, britain had failed to yield these lucrative fur-trading posts. in hopes of reclaiming lost hunting grounds with british support, a northwest indian confederation was gradually molded between 1785 and 1787, consisting mainly of shawnee, delaware, ottawa, iroquois, ojibwa, miami, and potawatomi. kentucky frontiersmen reacted to this threat by initiating raiding parties on native villages as early as 1788, and indian warfare flared up the following year.

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: