Short answers, pulled from the story.
The Renaissance in Croatia began in the middle of the 15th century. The conventional starting point for Croatian Renaissance art is 1441, when sculptor Juraj Dalmatinac was contracted to work on Šibenik Cathedral.
The Renaissance reached Croatia's Adriatic coast earlier than most of Europe due to its proximity to Italian Renaissance centers, especially Venice, and the high mobility of Dalmatian artists who studied and worked across Europe. The political structure of Dalmatian city-states and the patronage of local noble families also encouraged the movement's spread.
Šibenik Cathedral, begun in 1441 under architect Juraj Dalmatinac, is widely considered the opening monument of Croatian Renaissance art and architecture. It was the first church in Europe built with a three-leaf frontal and half-barrel vaults, and its construction used large stone blocks joined without concrete, a technique borrowed from woodworking. Its exterior apses are ringed by 72 sculpted portrait heads, 40 of which were carved by Juraj himself.
The most important Croatian Renaissance painters were Lovro Dobričević, Mihajlo Hamzić, and Nikola Božidarević, all from Dubrovnik. They painted altar screens that introduced early portraiture, linear perspective, and still-life motifs into Croatian art.
Karlovac, planned in 1579, was the first entirely new city in Europe designed according to Renaissance ideal city principles. It was built on a radial plan, a layout that later became common in the Baroque period.
Marin Držić was a Croatian playwright and prose writer from Dubrovnik who became one of the most important European authors of the Renaissance period. His works include the comedy Novela od Stanca (1550) and Dundo Maroje (1551 or 1556). He is considered a key figure in the tradition of Croatian Renaissance literature that flourished in Dalmatia and Dubrovnik.