Nationalism lead to the start of world war i because it caused

Even before world war ii had ended, it was apparent that the allies would not remain friends in the post-war era. explain what is meant by the term cold war. then describe how the conflict between the superpowers manifested itself in the two following regions: europe and asia.

Why did the united states become involved in the soviet-afghan war? the united states wanted access to the afghan oil fields. the united states wanted to retaliate against the soviet boycott of the 1984 olympics in los angeles. representative charlie wilson convinced congress to fund afghan resistance to soviet influence. president ronald reagan wanted to force the soviets to withdraw from afghanistan.

When conducting research for forming a hypothesis, which practice should historians follow?