form. 4 . See Chamorro v. Puerto Rican Cars, 304 F.3d 1, 6 (1st Cir.2002) ("The effective administration of justice requires that trial courts possess the capability to manage their own affairs.”); Pinto v. Universidad De Puerto Rico, 895 F.2d 18, 19 (1st Cir.1990) ("The court has no obligation to play nursemaid to indifferent parties.”); Sonera v. Mayor, Civil No. 09-1005, 2011 U.S. Dist. LEXIS 73346, at *2 (D.P.R. July 7, 2011) (finding one year of inactivity, combined with other factors, sufficient to invoke Rule 41(b)); Robledo-Rivera v. Cartagena, 233 F.R.D. 236, 237-38 (D.P.R.2005) ("It is well known that the Court cannot sit idly waiting for plaintiff to litigate its case at its pleasure.”); Jardines Ltd. P'ship v. Exec. Homesearch Realty Serv., Inc., 178 F.R.D. 365 (D.P.R.1998)
holding leave to amend should be freely granted absent a showing of undue delay bad faith undue prejudice or futility recognizing rule 48b allows courts to dismiss cases for prosecutorial delay even though the delay does not amount to a constitutional violation holding that court may refuse leave to amend because of undue delay holding courts have authority to dismiss a case  for want of prosecution in order to prevent undue delay in the disposition of pending cases docket congestion and the possibility of harassment of defendant holding that when determining whether a delay in prosecution violates a defendants right to a speedy trial courts must consider the length of the delay the reason for the delay whether the defendant asserted his rights and the resulting prejudice to the defendant