what action did congress take in the late 1800s to relieve
the supreme court's overloaded docket?

Congress established the Court of Appeals by Congress in 1891, it was established as “gatekeepers” to relieve the Supreme Court of much of the burden of hearing appeals from the district courts

Explanation:

HOPE THIS HELPS

The modern Manhattan is derived from these early names. Dutch settlers named the lower part of the island New Amsterdam in 1624. When the English seized the land in 1664, they renamed it New York in honor of the Duke of York.