how do direct definition , synonym, antonym, and explanation clues can help readers figure out the meaning of unknown word.

synonyms, antonyms, definitions, and explanation clues are all examples of context clues-- these clues help the reader get an idea of the unknown word, which helps in building an understanding by giving them an idea of the structure and meaning of the word, as well as how it's used.

i think they would live in caves or natural tunnels

the group i'm selecting: greeks.

a first group of greek immigrants came to the us in the 1850s. the second group came to america starting in the 1890s due to economic opportunities they didn't have back in their home caused by the hardships of ottoman rule. greek immigration was 90% male, many of them expected to work and return to greece after earning enough capital, but ultimately had to remain in the us after the greek genocide.