Original sentence: The Croatian awareness was weak at the time of 19th century, but started to grow with increasing Hungarian pressure, especially the April Laws that ignored Croatian autonomy under Hungarian Kingdom
Edited sentence: However, attempts to magyarize Croats had started at 17th century and increased greatly since 1830s prior to the Hungarian Revolution.The Croatian awareness was weak at the time of 19th century, but started to grow with increasing Hungarian pressure of Magyarization, especially the April Laws that ignored Croatian autonomy under Hungarian Kingdom