What is "that much"

Usage examples of "that much".

For the future, therefore, it may be taken that much the most important evils that mankind have to consider are those which they inflict upon each other through stupidity or malevolence or both.

I wondered if the hump on his back made that much difference, if it made him such a green monkey he'd had to retreat into his insular existence.

Make it that much harder for the Kolnari to tag 'em even from the air.

Instead, he looked toward Amatin and was relieved to see that much of her anger had fallen away.

Then, after a few hundred years, when we saw what the empire was becoming, how much better it seemed, how much saner were the councils of man, we realized that much of the ugliness of life had been God's doing.