is a term which refers to the increasingly widespread use of power-driven machinery in the first half of the 1800s. a) GDP per capita b) The Industrial Revolution c) The living standard d) Investment and inventions

B) the industrial revolution

Explanation:

https://openstax.org/books/principles-macroeconomics-2e/pages/chapter-7

the hereditary right of a monarch to rule from the mandate of heaven

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.