Answer:
1865 , German langurage
Step-by-step explanation:
On February 8, 1865, Mendel presented his work to the Brunn Society for Natural Science. His paper, which was names "Experiments on Plant Hybridization," was published the year after.
An English translation of Mendel's 1865 paper in German appeared in the Journal of the Royal Horticultural Society only 1901.