Which of the following helped foster the development of a market for collateralized debt obligations $($CDOs$)$ and collateralized mortgage obligations $($CMOs$)$ in the $2000$s$?$ Check all that apply.

$$ Establishment of the Federal National Mortgage Association $($Fannie Mae$)$

$$ Inflows of Foreign Capital

$$ Establishment of the Government National Mortgage Association $($Ginnie Mae$)$ and the Federal Home Loan Mortgage Corp $($Freddie Mac$)$

$$ Development of mathematical models to price CDOs and CMOs