Mortage-backed securities - Tradução em português

When the economy entered crisis in 2008, the government had many weapons in its arsenal to help the housing market. The Treasury Department and Fed started buying mortgage-backed securities, which helped push rates lower for homeowners. The government took over mortgage finance giants Fannie Mae and Freddie Mac, which helped stabilize the market. And the government tried to quell foreclosures.

Por favor, traduzir o que está em negrito.