It is June, you are very cold, and you have not seen the sun for 24 hours. Where are you?
South Pole during the solstice
Tropic of Capricorn during the solstice
North Pole during the equinox
O Prime Meridian during
the equinox

Answer they are produced by collision of tectonic plates;

Answerland;

The us is first  the  u.s. economy  remains the  largest in the world  in terms of nominal  gdp. however, the  u.s. economy  loses its spot as the number one  economy  to china when  measured  in terms of  gdp  based on ppp. in these terms, china's  gdp  is $23.19 trillion exceeds the  u.s. gdp  of $19.42 trillion