It depends on whether you were a legal resident on December 31, 2019.
Your ability to be treated as a resident for U.S. tax purposes may have terminated on when you left the U.S. in March 2019. See the IRS Publication 519 section on "Last Year of Residency" for information regarding when your resident status terminates.
If you were not a U.S resident for tax purposes on December 31, 2019 you cannot file Form 1040 for the period of time after you were a resident.
If, however, you met the Substantial Presence test for 2019 and your residency was not terminated, you are eligible to file a Form 1040, and have the option to treat your nonresident spouse as a resident for tax purposes. See this text from IRS Publication 519 about the option to treat a Nonresident Spouse as a Resident :
"If, at the end of your tax year, you are married and one spouse is a U.S. citizen or a resident alien and the other spouse is a nonresident alien, you can choose to treat the nonresident spouse as a U.S. resident. This includes situations in which one spouse is a nonresident alien at the beginning of the tax year, but a resident alien at the end of the year, and the other spouse is a nonresident alien at the end of the year."
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