Jesus told us in Matt 23 who "this generation" who sees the beginning of the wars, famines, plagues, and desolation of the temple/Jerusalem/Israel was.
Mat 23:34Wherefore, behold, I send unto you prophets, and wise men, and scribes: and [some] of them ye shall kill and crucify; and [some] of them shall ye scourge in your synagogues, and persecute [them] from city to city:
Mat 23:35That upon you may come all the righteous blood shed upon the earth, from the blood of righteous Abel unto the blood of Zacharias son of Barachias, whom ye slew between the temple and the altar.
Mat 23:36Verily I say unto you,
All these things shall come upon this generation.
Mat 23:37O Jerusalem, Jerusalem, [thou] that killest the prophets, and stonest them which are sent unto thee, how often would I have gathered thy children together, even as a hen gathereth her chickens under [her] wings, and ye would not!
Mat 23:38Behold, your house is left unto you desolate.
Eze 14:21"For this is what the Sovereign LORD says: How much worse will it be when I send against Jerusalem
my four dreadful judgments--
sword and famine and wild beasts and plague--to kill its men and their animals!
SEALS 1-4!
Just as Jesus predicted, all of that came upon that generation and the four seals are still "riding", the "house" is still desolate to this very day!