Who were two important explorers of portugal, and what did the accomplish?

Me i really need which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

Which phrase best completes the diagram?

Read the passage below. which of these statements describes the problem with including this passage as part of an explanatory essay? passage: the neolithic revolution changed everything for humans. before the n.r., you couldn't even plant food. i know you want to hear more, don't even deny it! o a. the tone is too dull and does not include a hook to keep the reader interested. o b. the tone is too objective and does not show the author's opinion. o c. the tone is too transitional and does not stay focused on one topic. o d. the tone is too informal and does not use appropriate vocabulary. surmit