What are mapmakers referring to when they talk about hierarchy

Which of the following statements describe a problem with the articles of confederation? check all of the boxes that apply. the government had no power to tax the people. congress could not act without the approval of nine of the thirteen states. amending the articles required unanimous agreement from the states. congress had no power to regulate trade.

Summarize the effects of the marshall plan on the us and western european countries

When did paul zoll develop cardiac pacemaker