did he have a duel with someone?
Yes, with Aaron Barr.
Alexander Hamilton
Soon after the 1804 gubernatorial election in New York—in which Morgan Lewis, greatly assisted by Hamilton, defeated Aaron Burr—the "Albany Register" published Charles D. Cooper's letters, citing Hamilton's opposition to Burr and alleging that Hamilton had expressed "a still more despicable opinion" of the Vice President at an upstate New York dinner party. Cooper claimed that the letter was intercepted after relaying the information, but stated he was "unusually cautious" in recollecting the information from the dinner.

Burr, sensing an attack on his honor, and recovering from his defeat, demanded an apology in letter form. Hamilton wrote a letter in response and ultimately refused because he could not recall the instance of insulting Burr. Hamilton would also have been accused of recanting Cooper's letter out of cowardice. After a series of attempts to reconcile were to no avail, a duel was arranged through liaisons on June 27, 1804.
all of the delegates to the constitutional convention generally agreed that The goal would be a new system of government, not simply a revised version of the Articles of Confederation. what was the convention about? To revise the league of states and first system of government under the Articles of Confederation. where was it held? At the Pennsylvania State House. what were revisions done on slavery in the convention? Congress would have the power to ban the international slave trade, but not for another twenty years (that is, not until 1808). In exchange for this concession, the federal government's power to regulate foreign commerce would be strengthened by provisions that allowed for taxation of slave trades in the international market and that reduced the requirement for passage of navigation acts from two-thirds majorities of both houses of Congress to simple majorities. what happened to the slave trade in it? Slave trade was allowed to continue and Congress could only ban it  after 1808.. mention a few amendments? A need for a different way of amending the Constitution was felt, but no voting was carried out regarding this. name a few people present at the convention? Oliver Ellsworth , Alexander Hamilton, James Madison , William Paterson and others. who is the second person? An American statesman, politician, legal scholar, military commander, lawyer, banker, and economist. any pop culture reference on him? He has appeared in many historical fictions. Also his portrait is found on the $10 bill. were there any portraits of his on any currency? Yes, on the front of the U.S. $10 bill , and other notes.
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Alexander Hamilton [SEP] Duel with Burr and death
Soon after the 1804 gubernatorial election in New York—in which Morgan Lewis, greatly assisted by Hamilton, defeated Aaron Burr—the "Albany Register" published Charles D. Cooper's letters, citing Hamilton's opposition to Burr and alleging that Hamilton had expressed "a still more despicable opinion" of the Vice President at an upstate New York dinner party. Cooper claimed that the letter was intercepted after relaying the information, but stated he was "unusually cautious" in recollecting the information from the dinner. Burr, sensing an attack on his honor, and recovering from his defeat, demanded an apology in letter form. Hamilton wrote a letter in response and ultimately refused because he could not recall the instance of insulting Burr.