You can promote Americanism by promoting Patriotism. Being educated on the Constitution and American history. Supporting our troops and those that died for our country. Celebrating their great heroism. Celebrating veterans day. Thanking our government leaders, president, police, firemen and medical workers that protect us. Be loyal to the law and be a good citizen. Help immigrants get citizenship here or help give them the boot if they wont. Participate in politics/vote during president elections. Be open minded and kind towards all Americans no matter their religion, gender, age, or race. Don't discriminate. Accept all walks of life. Educate your children on the same things so they can educate their own children and so on.