Beginning in 1834, an index of business activity by the Cleveland Trust Company provides data for comparison between recessions. Beginning in 1854, the National Bureau of Economic Research dates recession peaks and troughs to the month. However, a standardized index does not exist for the earliest recessions. In 1791, Congress chartered the First Bank of the United States to handle the country's financial needs.
Shellfish, any aquatic invertebrate animal having a shell and belonging to the phylum Mollusca, the class Crustacea (phylum Arthropoda), or the phylum Echinodermata. The term is often used for the edible species of the groups, especially those that are fished or raised commercially. Bivalve mollusks, including oysters, mussels, scallops, and clams, rank among the most commercially important shellfish throughout the world. Certain gastropod mollusks, such as abalone, whelk, and conch, are also marketed.
Crayfish, also known as crawfish, crawdads, freshwater lobsters, or mudbugs, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea.They breathe through feather-like gills and are found in bodies of water.Some species are found in brooks and streams where there is fresh water running, while others thrive in swamps, ditches, and rice paddies.hey breathe through feather-like gills and are found in bodies of water. Some species are found in brooks and streams where there is fresh water running, while others thrive in swamps, ditches, and rice paddies.