Answer:
D) Each solar system contains billions of galaxies
Think, there are no other galaxies from the sun to Pluto (not a planet but still in our solar system) and the answer said EACH solar system and, a Galaxy contains solar systems not the other way around.
Because Hoover wanted to end the Great Depression but I'm not entirely sure
Answer:
The cause of World War I, which made the aforementioned items transferred to alliances, imperialism, militarism, nationalism was the assassination of Archduke Franz Ferdinand of Austria-Hungary. When Russia began to prepare for WW1 due to the alliance with Serbia, Germany declared war on Russia.
In the postwar period, disillusionment influenced the work of many artists and writers, prompting them to question and examine "<span>war’s inevitability" among other things. </span>