Someone plz help 1. What are the differences between the geocentric model of the solar system
and the heliocentric model of the solar system? When were these two
models used and why did they change from one to the other?
2. How could you create or design a new calendar? What would you think
about when developing a new type of calendar? Explain your thinking.
3. How are Yuri Aleksey Gagarin and Alan Shephard's accomplishments
similar? How are they different?
4. Compare and contrast the Apollo 13 mission and the ill-fated Challenger
flight. Why were each significant?
5. How do you think a Soviet astronaut would have viewed the Apollo 11
mission as it was taking place? Support your answer.

cultural/diplomatic relations. most medieval japanese   culture has chinese origins. writing, architecture etc.

the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.

to reform the distraught soviet union, the democratization of the communist party was promoted through party secretary mikhail gorbachev's policies of “perestroika” and “glasnost.” perestroika refers to the reconstruction of the political and economic system established by the communist party.