PORTLAND, Ore. (AP) — Habitat for Humanity in the Portland, Oregon, region received its largest-ever charitable donation — $8.5 million — this week from billionaire philanthropist MacKenzie Scott. The contribution comes at a critical time as Oregon residents continue to feel the effects of an affordable housing crisis exacerbated by the pandemic. The donation is a small portion of nearly $4 billion that Scott donated to 465 nonprofits, she announced in a blog post Wednesday. The philanthropist has donated more than $12 billion to charitable causes since her divorce from Amazon founder Jeff Bezos in 2019. Scott, who is worth about $48 billion according to Forbes, signed the Giving Pledge through which many billionaires have promised to donate more than half of their wealth.