1000 years ago less than 4% of habitable land was used for our glucose today of approximately 50% used for our culture which singing best explains why this large change occurred?
There are several possible explanations for why the amount of habitable land used for agriculture has increased so dramatically over the past 1000 years. One possible reason is the growth of human population, which has led to an increased demand for food and resources. Another factor is technological advancements in agriculture, such as the development of new crop varieties and farming techniques, which have allowed for increased productivity and efficiency in food production. Additionally, changes in societal norms and values may have played a role in the expansion of agriculture, as people have come to place a greater emphasis on agricultural practices and the importance of food security. Overall, a combination of these factors likely contributed to the significant increase in the amount of habitable land used for agriculture over the past millennium.
It should be noted that this answer is speculative and based on general knowledge, as the question posed does not have a definitive answer.