Misc: 2,000 pounds of ---------- and other space debris fall on the earth everyday?

Questions

In 1821 Costa Rica, El Salvador, ---------- , Honduras and Nicaragua gain independence. ?

In 1821 Costa Rica, El Salvador, Guatemala, ---------- and Nicaragua gain independence. ?

In 1821 Costa Rica, El Salvador, Guatemala, Honduras and ---------- gain independence. ?

In 1890 Dame ---------- Christie mystery writer (Murder on the Orient Express), born. ?

In 1890 Dame Agatha ---------- mystery writer (Murder on the Orient Express), born. ?