What did constantine build that contributed to the success of constantinople

Answer

Although some historians disagree (claiming Constantine laid the foundation), he is credited with building the first of three Hagia Sophias, the Church of Holy Wisdom, in 360 CE. The church would be destroyed by fire in 404 CE, rebuilt by Theodosius II, destroyed and rebuilt again under Justinian in 532 CE.

they killed other men

explanation:

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

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                                                    -wolfiewolffromsketch