We review for abuse of discretion a district court's ruling on a motion to amend the pleadings. Stipe v. First Interstate Bank–Polson, 2008 MT 239, ¶ 10, 344 Mont. 435, 188 P.3d 1063 (citation omitted).
We review a district court's decision to strike an answer and enter default judgment as a discovery sanction for an abuse of discretion. See Watson v. West, 2009 MT 342, ¶ 17, 353 Mont. 120, 218 P.3d 1227 (citation omitted) (deciding whether the District Court abused its discretion by striking, as a sanction, West's answer to Watson's complaint and entering a default judgment in favor of Watson). This Court also reviews the sanction imposed for an abuse of discretion. Watson, ¶ 17.