We think it is a goverment conspiracy Because only the government could sell gunpowder, and Catholics weren't allowed to buy any. We know that the owner of the Cellar was a relative of Robert Cecil so Cecil probably was framing the catholics as he was a hater and wanted to get rid of them. Robert Cecil probably let the cellar owner on the secret as it was a part of his plan but after he had succeeded he arranged a way of killing the Cellar owner
Many people believe that the gunpowder plot in 1605 to blow up the King and parliament was formed by Catholics. Some people think that Robert Cecil, the King's chief minister planned the plot to frame the Catholics. Cecil was also actually the leader of the government, a spy master and a financial wizard. He could have quite easily framed the Catholics and has some errors to which makes the story seem that part of the story untrue.The Catholics planned the plot to blow up the king becausethey hated the King and the government.James the first didn't keep his promises in treating the Catholics fairly and They wanted revenge from how they were treated and They wanted England to have a different king.