helopeople13 helopeople13 11-04-2021 History contestada How did the United States support the war before sending troops to Europe? Carried supplies and war materials to the Central Powers. Invested $4 billion in European war bonds Carried supplies and war materials to the Allies. Invested $2 billion in European war bonds Carried supplies and war materials to the Axis. Invested $6 billion in European war bonds Carried supplies and war materials to the Allies. Invested $8 billion in European war bonds