Explain what happened at the battle of termopylae

The battle of Thermopylae was the first between the Persians and Greeks during the Persian invasion of 480-479 BC. The Greek force was very small but was determined to make a stand against the huge Persian army.

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.

the answer is b. hope this .