In the history of astronomy, which of the following is true? Question 4 options:

Ptolemy argued that the sun was the center of the universe.

Isaac Newton was criticized for his work on the geocentric model.

Galileo Galilei built one of the first observatories.

Johannes Kepler was a student of Tycho Brahe.

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.

the monroe doctrine is the best known u.s. policy toward the western hemisphere. buried in a routine annual message delivered to congress by president james monroe in december 1823, the doctrine warns european nations that the united states would not tolerate further colonization or puppet monarchs.