What major "army" rose up against Lenin's Red Army?

The "White Army" or "the White Guard."

Explanation

It was a counterrevolutionary army that was made by units and headed by some top oficcers of the former czarist army such as Gen. Kornilov and Gen. Denikin.

Its objective was to topple the Bolshevik government and denounce the Treaty of Brest-Litovsk (1918), which had made enormous territorial concessions to Germany and had taken Russia out of WWI. The White Army was supported by the Western Powers because they were interested in re-establishing the Eastern Front. Its disappearence had allowed Germany to redeploy more armies in the Western Front, increasing its might.

Explanation:

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation:

general allotment act (dawes act) february 8, 1887

amendment to the dawes act, february 28, 1891

commission to the five civilized tribes (dawes commission), march 3, 1893