The berlin wall.....................................
The answer is C. the executive branch
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Constantine was an awesome military officer winning real triumphs over many nations.
In a fight one glorious morning, Constantine was conclusively fruitful, and he found himself able to enter Rome on the following day. On entering Rome, Constantine set out on an extensive purposeful publicity crusade to legitimize his principle and depict himself as a deliverer over the despot Maxentius.
Constantine had the capacity unite his part, demonstrating his military predominance over his adversaries. In 313, he marked with Licinius the order of Milan. This authorized Christianity and permitted flexibility of love. This proclamation was frequently disregarded, yet it was still a critical minute with the rule of enduring Christianity acknowledged inside of the Roman domain.
Well this is a very opinionated question but personally:
Astronauts improve society by using the newest and most expensive technology to be able to explore space as we know it.
Forced to accept Blane for ww1 and the economic conditions