Why are word sets like there/they’re/their and your/you’re called homophones?

In presidential elections if no candidate receives a majority of the election votes, a. the winner is decided by the house of representative’s. b. the current president remains in office for four more years. c. the winner is decided by the senate. d. a runoff election is held in december between the two candidates who received the most votes in the general election.

Causes and effects of the great depression

Why does polonius say that he will spy on hamlets conversation with his mother?