Why was Constantinople renamed Istanbul

Since modern day Turkey had gone from a multiethnic, cosmopolitan Empire, to a nation state of Turks this was seen as necessary to complete this process. As such Constantinople was changed to Istanbul, and Ataturks government would pressure other countries to start calling the city Istanbul

Due to the fact that Constantinople had since the Middle Ages often been referred to as just "the city", and even today some Greeks still do refer to Istanbul as "the city". However when the Turkish Republic was founded, this changed, and the city was renamed to Istanbul

Explanation:

the federalist party which advocated strong centralization dominated the united states government till 1800. so 1800 election transformed the power from one party to another party for the first time and was thus a turning point in american history. so jefferson called it "revolution of 1800".

explanation:

one of the main reasons was definitely slavery. back in 1861, republican abraham lincoln was elected and ended up being a major influence in the slavery business. slavery greatly affected the texas economy because back in 1845 during the annexation of texas, slaves became a big part of the texas population. many texans that were in favor of the secession influenced groups through party ties.