According to one theory, how did the earliest people come to the americans?
a-african tribesmen sailed large ships to the caribbean islands.
b-europeans traveled across a land mass that connected europe and north america.
c-native americans migrated to asia and brought others with them when they returned.
d-southeast asians sailed across the pacific ocean to north america.

Read the summary about factory work during the industrial revolution. with the development of new technologies and manufacturing processes, the nature of factory work changed. now, machines could do the heavy labor formerly done by men. this meant that women and children could work in factories. in fact, factories sometimes hired entire families. they earned hourly wages. while this could bring in a steady income, that income was not high. women earned less than men, and children’s wages were especially low. the underlined sentence identifies a central trend. provides some key details. makes clear the writer’s opinion. states the main idea of the summary.